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Discussion Starter · #1 ·
I have my lights at around 100PAR for a 7h period from 9-4pm. From 4-7pm the lights dim to about 10% so I can still enjoy the tank. From 7-9, the lights dim to a moonlight setting which is only blue/green LED on low setting.

A bubbler comes on at 8pm to aerate the water when the plants need O2, and cuts off in the morning when CO2 kicks in at 6am.

Could this extra, low intensity period be giving me problems, regarding algae? Should I be making sure the pH is dropped a full point even during the low intensity period?
 
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