I just got my girlfriend this Pleco so she could have something in my planted tank. He’s a Colombian zebra and he’s not doing well already. I’ve had him less than a week and can’t figure out how to help him. He’s not eating and color is fading in and out and some white spots come and go. Tank mates: a white betta, 4 albino Danios, 3 shrimp, 4 snails. Plants: dwarf hairgrass, Madagascar lace, tiger lotus, lucky bamboo, alt. Renikii bonsai tree. Co2 injection, Fluval 307 canister filter on a 55gal tank. Just did a water change when I got him. Dosing water with Iron daily and flourish 3times a week. Help please, don’t want him to die already.