Diagnose Help

[NilePufferIsTheWay]

My tank has been running l for a week what is on top of my water of the tank that's floating. Please help!!!!
125 gallon tank, 1 Fakaha Puffer. Fx6 filter sand media.

 

[twentyleagues]

Bacteria, proteins, need more surface agitation or surface skimming.

 

[hart24601]

Bacteria, proteins, need more surface agitation or surface skimming.

I agree especially if trying new or a lot of foods. The fuval clean? Purigen might also help capture those compounds.

 

[NilePufferIsTheWay]

I agree especially if trying new or a lot of foods. The fuval clean? Purigen might also help capture those compounds.

Cleaned the whole filter and added new media. I added this seed bacteria once every day for 7 days. This all of a sudden came up today. Hopefully the fish will be ok. Don't want him to die.

 

[hart24601]

Just bet that gunk out, it's probably no biggie. I would add purigen and carbon and of course make ammonia is 0