Striper83 Posted April 1, 2022 Share Posted April 1, 2022 Hello, I have a 120 gallon planted aquarium going with injected Co2 via inline diffuser and have noticed my festivums acting odd hiding and not eating. I checked water parameters and everything is good except the ph in the tank has gotten fairly low. The ph is registering 6 on the API liquid test and the lowest reading on the CoOp test strips of 6.4. Being the lowest value on the tests I’m fear it could be even lower. I have soft water in my area with little to no gh and kh so not much buffer. The tank has a fair amount of driftwood with eco complete as a substrate. I would like to raise the ph some and also add some buffering capacity to the water to avoid ph fluctuations. I really didn’t want to mess with the ph at all and just keep it as it would be naturally with water changes but I feel the ph is getting too low with the co2 and lack of gh and kh. I want to add crushed coral to my canister filter to add the hardness to the water. My question is how much coral would be a good starting point to start to remedy the issue without raising the ph too quickly and harming the fish? Thanks for you time, Justin Link to comment Share on other sites More sharing options...
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