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Whats the rule of thumb here? I mean I get the more bubbles the better but for multiple resivoirs or a few big ones can you just use a 20W Air Pump or does each and every plant need its own air pump? If anyone has pictures of their pumps on/bubbles going that would be nice so I can see and compare it to mine. Thx 4 any tips.
from Hydroponics / Aeroponics
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