Black brush algae from hell
I noticed that when doing the 30% water changes every other day, the algae
was kept in check. However as soon as I left if for a week, it was back
worse than ever.
CO2 is now at 2 bubbles/sec.
I'm literally picking the affected gravel out. This has really stumped me.
--
Later.
D.E.
Have a better one.
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