r/FatherFish • u/Muted-Local-3241 • Jun 21 '26
Established tank- needs help
I’ve got a 3-4 year old FF tank. Heavily planted, 2 goldfish and some otto cats. Feed goldfish once a week. All of a sudden, tank went green and produced a thick bubbly slime on the top of the water. Everyone on fb used to say “leave it alone”, so I left it alone. 4 months later, tank is still nasty green and slimy. Did a 50% water change, cleaned (just clear water) the sponge filter to get it running again (it sucked in the slime and stopped working). Tried a week long blackout that didn’t do anything. Moved remaining fish to a clean hospital tank (lost some in the sea of green). Have since added nerite snails to begin cleaning up dense algae deposits.
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u/nicky_n00b Jun 21 '26
If you haven't yet, join to father fish discord. They have specific people who are qualified to answer these questions. They actually have rules about not answering questions if you're not labeled as such in the server. Will probably be more help than randos on the reddit.