Im dripping 6gph 144 gallons a day on each of my 400sWhat is the optimal % to change per day with a drip system? I have a 450 and 400 set up to a drip system - I have it set so it’s changing about 80 gallons per day on both.
Any recommendations for how much I should be changing a day?
thanks.
This is true. I don’t know the exact gph on my 1100 but I try to get it as low as possible. Check nitrates once a week or so and adjust flow accordingly.Won’t that number really be predicated by your stock list and it’s impact on nitrates? I imagine that rate will vary per tank.

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