Low KH, high GH, neutral Ph

WendysJungle

Member
Hi all, I have just converted my 125g from artificial to real plants, and begun CO2 fertilization for the first time. I just tested my water, and am unsure what to do (if anything) with these parameters:

Nitrate 20
Nitrite 0
dGH 16
Chlorine 0
dKH 2.25
Ph 7.2 and stable
Ammonia 0

My tap water does NOT have this issue naturally, testing my tap water gives the following:

Nitrate 20
Nitrite 0
dGH 4.2
Chlorine 0
dKH 4.48
Ph 7.2

So why is my tank GH so high, and KH so low? I have no calciferous rocks or decorations, use regular old aquarium gravel with CaribSea Eco-Complete Planted Aquarium Substrate mixed in. I just added the CO2 yesterday, it’s the ZRDR CO2 Generator system that uses the baking soda and citric acid method. I still need to make the 4dkh water to use my CO2 indicator, but no fish are looking distressed or gasping, everybody looking happy and healthy, and I’m starting pretty conservatively with 1 bubble per second on my bubble counter.

Is the GH/KH something I need to worry about, and what do I do about it? Everything I read regarding high GH talks about using RO water, but since my tap water isn’t the issue it doesn’t seem to make much sense to go that route.

The tank is well established, it’s been running for 6 years, the only change is adding the live plants and CO2 over this past week. I do weekly water changes, treat all water with Prime, change out filter materials regularly, and use liquid Easy Green fertilizer, occasional Easy Iron liquid fertilizer, and Excel Flourish. Non-plant decorations are mostly resin, with a few natural driftwood pieces with Java ferns attached.
 

Mrfister1116

Member
Really depends on how you want to stock it ... most fish won’t care a bit about that as long as it’s stable
 
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