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Discussion Starter · #1 · (Edited)
I know, I know. Another post about GH / KH. Believe, at this point I feel like I have read them all. Yet I still don't know what to believe.

My parameters are:GH-11, KH-7 PH-7.3, TDS-200. That is tap water and with CO2 injection, aquasoil and seiryu stones. The aquarium (25gallon) is a week old in terms of water and planted heavily.

I am not sure if I should keep my water as is, and just continue using my tap water. this is of course the simplest of routes. Or buy RO in jugs and supplement it into my water changes accordingly to drop my GH KH values.

I hear having low KH is good for CO2 injection, and I have been finding that I have to keep boosting my CO2 bubble count up to get that sweet sweet lime green on the drop checker. roughly 2-2.5 bps now. But on the other end, I hear the range I am in is completely fine and not to worry. I planted heavy from the get go so I dont want to screw it up and lose plants.

Anyone want to chime in and offer their experience?
 

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Discussion Starter · #4 ·
Also, are those parameters what's in the tank or what's coming out of the tap? Knowing both would prob help more.
Those parameters are my tank water. My tap water as of last night was kh 8, gh 13. Is was higher than my tank water which I was a little surprised by, but I guess the aqua soil could have a hand in that.

For the RO water question, would doing a 1/4 RO and 3/4 Tap, or whatever I choose be enough? Ideally I wouldn't want to go with all RO as it becomes more of a pain.

For plants I have:
Christmas moss
dwarf hair grass
monte carlo
bolbitis heudeiotii
cyperus helferi
microsorum trident
hygrophila pinnatifida
bucephalandra kedagang
Cryptocoryne parva
 

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Discussion Starter · #6 ·
You have two forces fighting each other.

The aquasoil buffers the soil reducing dKH, while the seiryu stones are raising it.

I would test dKH every other day for a couple of weeks and see how it changes. If it varies a lot, then pH drop method is not going to work for you.

If you want to keep CO2 levels stable, you might look into getting a flow meter. It would help keep CO2 flow rate constant.

And by the way none of the plants you listed are particularly sensitive to dKH levels.
great to hear! i dont plan on adding anymore more the time being.

I just did some research on the RO buddy. seems legit, and I will likely go this route to mix RO / tap water for my water changes. I want to avoid supplements for raising KH/GH so I plan to find a process that allows me to bring it down to the desired levels.

I will look at what the flow meter does, I am unfamiliar with it..
 

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Discussion Starter · #9 ·
A dKH of 7 doesn't sound terrible, but at the same time isn't optimal. But again, it all depends on the plants you're keeping. Try researching the water parameters your plants prefer and maybe talk to people who have experience keeping plants in moderately hard water.
Im running ADA amazonia II.

what exactly isnt optimal about having a kh at that level?
 
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