I have a 45G, with power head and 2 HOBs. Substrate cichlid sand. Crushed coral.
Salinity runs between 1.019-1.021 (currently 1.021) they are usually happier in the higher range. Use marine salt.
Change yesterday evening.
I added some live rock yesterday and 4 mini plants of Microalgae and a canister filter. Into the canister I put the bio media of the smaller HOBs and left the one larger HOBs. So currently filtration is canister and the larger HOBs.
Puffers this am are not happy. (They we’re fine and swimming till midnight with I went to bed) . Sitting on the bottom and have a bit of a black belly
Levels tested with API strip
No3 o
No2 o
Ph 7.5 (so its low)
KH 120
GH 180+
Should I change out more water ASAP? And wait and see?