when i first bought my rainbow snakehead I didnt do a water change for almost 7months the parameters were ok as the tank was heavily planted . But after a few months the plants did'nt seem to be doing too well and there was a massive outbreak of algae I now do monthly changes and algae is down I have recently been doing weekley water changes on my pulchra tank as I posted previously that his tail was shredded I now think he is damaging his tail trying to burrow into the substrate as I found a crater in the substrate and I filled it in the next day it was there again I also caught him burrowing under a large peice of bog wood . So would the weekly water changes bother him as I am doing this to try speed up the healing of his tail