Hi, I have this old tank, 1o gal, the substrate is azoo grower bed, originally it had ph of 6.4 but beacuse I never changed the water or siphoned it, and just aded more and more water, now its ph is 8, I instaled 5 Chrom and they layd eggs but I didnt know that, today I was about to change that tank substrate, and saw little fish there, how can I just restore the ph of water to make it nice for Chrom, they need 6.5-7, the tank has some java ferns, mini pellia, java moss, and one anubia, little yeast co2 and light,My new plan is syphon the gravel to take dirt from 4 years and add coconut coir, any sugestions?
