with 3+ wpg and CO2 you will need to fertilize the water collumn, most go to EI at that point or their own variation of it. You should get a drop checker to help with CO2 monitoring/adjustments.
If you have a soleniod, start at 2-3 bubbles per second. If you do not, start at 1-2. Adjust based on fish/plants and drop checker.
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