Adding A Dual Flush Kit & A Diaper Sprayer To An Old Toilet

Our toilet is no longer the mild-mannered everyday toilet that you’d assume it was. Thanks to being born on the planet Krypton some simple DIY projects that we tackled last weekend, our former Clark Kent of a throne now boasts two new super powers. Can’t you just picture the comic book?

Here’s a rundown of the two blissfully “tool free” (more on that later) projects that we took on. The first was to convert our toilet into a dual-flush tank using a simple $20 converter kit (search HydroRight on or check to see if Home Depot has it) that a reader mentioned to us (thanks Allison!). The second was to add a Bum Genius diaper sprayer to make our cloth diaper clean-up a bit easier (that toilet add-on was $45, but we luckily got it as a shower gift). Oh and our toilet truly isn’t any fancy or special model, so both of these john-upgrades are projects that anyone can tackle in about an hour using any ol’ toilet to start with… although we do realize that a diaper sprayer isn’t high on everyone’s “must have” list.

Let’s start with the dual flush conversion kit. If you find yourself thinking “whaaaa?” let me explain. Splitting the flushing power of your toilet is a water conservation trick that allows you to tell your toilet when you need either a little or a lot of water to, um, take care of your business. Since flushing “liquids” doesn’t require as much water, a dual-flush toilet has a setting that uses a lot less of it. Word on the Interweb is that a dual-flushing function allows your toilet to use 30% less water, which can save the average household 2000 gallons of water a year. And the box that came with our dual flush converter states that the average family can save up to $100 a year just by adding one of them to one toilet in any household (which means it pays for itself five times in the first year alone). And just imagine how much you can save installing one on every toilet.

The box also claimed that this installation would be totally tool-free. But sadly my experience quickly required a tool to remove the tightly-screwed old handle (although it can easily be argued that some toilets wouldn’t necessitate one- ours was just super tight). The good news is that it was still a super easy undertaking. And the next step of removing the flapper (the gray thing that you can see a sliver of in the bottom-right) was far less involved (no tools required at all). Oh and turning the water off was optional, but I did decide to do that so I didn’t have to keep sticking my hand into tank water.

With the old pieces removed, the first task was to slide the bottom part of the dual-flush tower into place where my old flapper had been.

Then I wiggled a tight, black rubber band over the fill tube to keep the dual-flush piece in place and firmly pressed against the opening. There’s also a zip-tie at the back of the piece that I pulled tight to help keep things in place. I had accidentally cut the tie off at first, thinking it was part of the packaging, but thankfully the kit actually supplied a back up! They must have known people would jump the gun like I did. Lesson learned.

Then it was time to set the rest of the tower. It looks like quite a beast, but it clicks into place very easily with a simple drop-and-twist motion. You can see some of the technology in this shot – the adjustable blue slider is what helps to regulate how much water should be used in the quick flush function, and the green switch does the same for the full flush.

My next task was to put in the new button where the old handle had been. I was able to securely hand-tighten this (again, no tools required). Oh and hand-tightening is always a good approach because over-tightening things can potentially crack the porcelain of your tank or bowl. Not good.

Here you can see what the button looks like. It’s split for what we’ve been calling  a “single flush” (for liquids) and “double flush” (for, as the packaging describes, “when you need more power”).

From there you just pop the button device (the white box at the other end of the blue cord) onto the back of the button. And there’s no electricity or battery involved, despite the fact that it all started to look somewhat bomb-like at this point.

It took me about 20 minutes to get this far, but my eagerness to start flushin’ was damped by the fact that the buttons didn’t work at all at first. But through a few minutes of trial and error (which is pretty much how we do everything around here at Casa Petersik) I realized that the level of my blue slider was very important. If it was too close or too far from the water level, my button pushing wasn’t strong enough to lift the tower’s built in flapper. Fast-forward about ten minutes and this John was happy with his john. Both buttons worked every single time once we found that magical placement of the blue slider.

To demonstrate exactly what this dual-flushing function means when it comes to saving water, check out the difference between how little water is used at the single flush setting, and how much more goes out on the full flush setting. There was definitely an obvious difference in the water level, and you could even hear the toilet working a lot quicker for the single flushing action. Score.

As for our toilet’s second super power, the installation of the diaper sprayer also would’ve been completely tool-free had I not needed a wrench to unscrew my previous work. Other than that, the task was so simple that it barely requires step by step photography. The “Mini Shower” simply installs on the bottom of your tank right between your water line and the tank itself. Then a clear, plastic tube (which you can cut to a desired length) attaches with a firm push into the device on one end, and the sprayer on the other.

Here it is installed – you can see it even comes with a handle to adjust the water pressure. Very handy indeed.

If you’re still wondering what the heck a diaper sprayer is (as I admittedly was at first) it’s supposed to be a huge help for cleaning cloth diapers. In fact, many of you even recommended it to us on this post. Without getting too descriptive, it lets you spray “stuff” off of the diapers and into the toilet so it doesn’t go into the laundry (which is then done at a certain temperature to completely sanitize the diapers for their next use). Here’s a demonstration photo (and yes, I did accidentally spray the ceiling while attempting to take this picture).

The kit even comes with a little sprayer holster that can be installed onto a wall, but we opted to use the more subtle hook that hangs on the side of the tank since it feels less permanent (hopefully we won’t be diapering for the next few decades). You can also see that we chose to run the tube behind our tank to make the whole thing less of an eyesore, and this way we can keep the sprayer on the right side of the toilet (which is virtually invisible from almost every angle of our bathroom- plus it’ll also come in handy on that side for two right-handers like us).

So here’s our pimped out potty one last time in all of its super-charged glory.  We love that the upgrades were fast (60 minutes max), easy (almost 100% tool-free) and cheap ($20 converter + gifted $45 sprayer). And since the changes are fairly inconspicuous, our little loo can still keep its secret identity mostly under wraps. In fact, our half bathroom will be getting the same dual-flushing treatment asap because we’re so in love with the eco friendly (and wallet friendly) benefits of such a simple $20 upgrade. Especially when you consider that people pay big bucks for dual flushing toilets and this kit allows you to keep the toilet that you have out of a landfill, but upgrade it with the same cost and water saving technology.

I don’t know if it’s the man in me, but the idea of an upgraded throne is actually quite appealing. It’s the whole “my toy is better than your toy” frame of mind. And since I’ll never win the award for the biggest flatscreen TV or the biggest biceps, at least I can brag that my toilet is smarter than my friends’ toilets. Have any of you tackled either of these john-centric projects (or others like ’em)? We’d also love to hear if you have other tips for conserving water, saving money with an easy upgrade, or heck, cleaning cloth diapers for that matter. Share and share alike.


  1. Danielle says

    Awesome! Thanks so much for the great tutorial! I figured a dual-flush conversion was something we wouldn’t be able to get until our next future/dream house – becuz of the cost involved. I think we can definitely swing the $20 installation! Thanks so much for sharing.

  2. Kate says

    Very clever, I didn’t even know such conversion kits existed. When our three old toilets bit the dust, we replaced them all w/euro/dual flush from Costco (~$150/ea-on sale) and we LOVE them! Happy flushing! (the sprayer looks very handy too! :))

  3. Angela says

    So…now that the little one is home, how is the sprayer working? And would you recommend cloth diapers to new parents?

    • says

      Hey Angela,

      Other thank playing around with the sprayer for testing purposes, we haven’t actually used it yet for our little one. See the cloth diapers we got are just a wee bit big for Clara, so we’ve been using Seventh Generation disposables to tide us over until she’s big enough to fit her cloth ones. After she gains a few pounds she’ll be in them for the long haul (they’re one size fits all from around 12 lbs up- which we LOVE!) so we’re sure we’ll get tons of use out of the sprayer. We’ve heard nothing but great things about how it makes cloth diapering a whole lot easier.


  4. Jessica says

    AH! I MUST buy a cloth diaper-sprayer-downer! What an amazing invention. I just yelled out to my husband in the next room that we had to purchase one.. he didn’t seem as enthusiastic…. o well!
    So happy for you guys, by the way. You’ll have to update us on how the cloth diapers work out for you. When I told family and friends that I was planning on using cloth diapers they all rescinded their babysitting offers!

  5. Miki says

    How nifty, I’d love to have one of those! We save water the old fashioned way right now….”If it’s yellow let it mellow. If it’s brown, flush it down.”

  6. Dena says

    Our local Costco has dual flush toilets in the public restrooms. Between the three shopper girls in the family, we get plenty of chances to try them out. I do have a question, though. How often do you find you have to flush twice when you’ve thought once should have been enough? Maybe you used the light flush and it just didn’t take care of things so you used the stronger flush the second time. From our family’s experience, it doesn’t have to be “waste” posing the problem when flushing, but toilet paper instead. (It is my dream to one day get them to understand that less toilet paper is just as effective. sigh…) The double flushing at Costco is the main reason we haven’t tried this at home yet.

    Oh…and congrats on the cutie!

  7. candace says

    YAY. I love the dual flush idea!! I need to install one on my toilet — I never knew about these before this post! And, when we start a little family, I’ll be sure to grab one of these sprayers – thanks for showing me the How Tos! I can’t believe you are still blogging – you two are the most prepared couple the world has EVER known.

  8. says

    Huh! I was wondering how that whole cloth diaper thing would work with your washing machine. You two seem pretty tidy, and I was finding it hard to believe you’d just throw that whole mess into your washer. I work in an environmental field, and if the hubs and I decide to go down that baby route, I wasn’t sure even I could handle cloth diapers. Now I’m a bit more convinced.

    I’m glad to see the dual flush is working out. I didn’t know that was such an easy DIY – we’ll have to do that! Are you still really liking it from the time you intalled?

    Congrats on the new little one! I’m not just saying this because it’s obligatory – she really is adorable. :)


  9. says

    Thank you so much for this post! I was wondering how I could make cloth diapers easier when the time comes. And the dual-flush kit is just as awesome.

    Congrats on your new baby!!

  10. says

    I know you can put a brick or some other kind of water-displacer in your toilet tank to save water, but I like yours much better! Because sometimes you really do need the “double flush” for a little more power. I’m glad to know its easy to install… I might just have to do that. And that button! Seriously, could flushing the toilet be any more cool?

  11. says

    That diaper sprayer is so neat! I just sent this post to a friend of mine who’s expecting and plans on cloth diapering.

  12. says

    I’m buying that dual flusher this weekend! My husband likes to flush anything down the chute even if there isn’t any “stuff” that needs to go down with it. A tissue he sneezed in, a q-tip, a paper towel(!!!)… it all gets flushed when he’s around. I think he has waste basket blinders on or something.

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