300G system, no skimmer

Your water needs to be saturated with Oxygen. A skimmer is a generator for oxygen in the water.
Without a skimmer, you need at least very strong watermovement i.m.o

Ron.
 
That does not make any sense. You think that changing 100% of week will not remove all the food. You would be like if anything servives with water changes like that.

Get a skimmer it cheaper and it can be turn off.

Alex
 
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