[zanbro]

I've had this 20 gal. tank with under gravel filter on top fin 20-30 power filter. I've had no problems with algae before. Testing revealed pH was a little high so I lowered pH with some vinegar. Added 2 new angel fish and this morning when I woke up I had an algae bloom. Any ideas?

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2 red fire dwarf gouramis
2 angel fish
3 buenos aires tetras

[Bob]

I would guess the vinegar killed some bacteria, the tank will need to recycle perhaps.

Why did add vinegar? You should use a PH buffer to lock in the PH.

PH buffers

Bob
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