The Planted Tank Forum banner
1 - 11 of 11 Posts

·
Registered
Joined
·
29 Posts
Discussion Starter · #1 · (Edited)
Hi all. I don't have a test kit handy, but I was able to test the TDS of my tap water and it's 487. Is that useable for a planted tank? I also have a RO/DI filter that we use for drinking water. Can I mix RO water with tap water to 'soften' it? My tank will be 50 gal. And I will probably be using Eco Complete or Aquasoil substrate.

Any help would be appreciated.
Mike
 

·
Registered
Joined
·
208 Posts
AFAIK it would be fine to mix r/o water with tap, 4 parts r/o to tap would get it down to an OK level for most plants. From what I can find out, 50 to 150 ppm TDS is a good range. My local water dept. says the local water is 248 ppm. I am just now getting back into planted tanks but when I lived here a long time ago my plants did great - sag, water sprite, hornwort. I hope this helps. By the way, do you know the chemical makeup of the TDS? Calcium carbonate or what?
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #3 ·
Thank you. I don't know what the chemical makeup is. I'm sure I can find that out though.

I did find my test kit, here are the results.

Tap Water
PH-7.6
chlorine-0
KH-16 degrees, or 286.4 ppm
GH-1 degree, or 17.9 ppm

What do you guys think? Should I go with a brackish tank..lol
 

·
Banned
Joined
·
1,086 Posts
I have a similar TDS, KH and pH but GH is much higher. A lot of what we measure in muni water systems is the by-product of the chlorine generation they use and not the overall quality of the source water. Most water companies want to maintain a pH in that range since it's a lot easier on the pipes. With a lower pH they'd have much more corrosion in the system.

I question zero chlorine though straight from the tap.

SteveU
 

·
Aroid Addict
Joined
·
3,493 Posts
My tap water is even harder than yours. gH is 350ppm, kH is 280ppm, and it works just fine for my tanks. The only limit is that you'll have a hard time growing softwater plants like Toninas and Eriocaulons unless you add R/O. I don't even bother with them.
 
1 - 11 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top