Just got done adding another filter to my 55g. I'm running a canister / bar with a tidal 75 and was wondering if the intake in to close to the substrate? Should I reduce it or will this be fine? I also moved my recirculate/wave maker down will this help with the brown looking alge on the sand? I'm still pretty new to reefing I also added some more live rock as other people suggested and the result of that was introducing ich to my tank. I've already lost two fish and just started medicating tonight with focus and metro. I've been performing regular 20% water changed once every week or two and have been using tap water and instant ocean to mix with water conditioner and will be using RO in future changes. In the meantime what else should I do? I'm also not looking to start a hospital tank as it would be more expensive then just replacing the fish in the future that are currently left.