whats your tactic?

This is Merlot (see the side starting to get raw and fin is starting to peel) These are of Raphael (see his side peeling/raw) Hello! I mean new here so if my post is in the wrong spot one sorry, and I'm sorry for any other thing that I'm doing wrong. I promise I tried my best. Well, I...

Okay, so after moving over to the high tech side of things, water changes are required more frequently and of greater volume (Oh the joys of fish keeping) Seeing as I will be dosing close to EI on ferts, I will be required to remove 50% weekly water changes, now this will be over 150 litres on...