Bill, I got the dosing pump but have not set it up yet. I intend to use it for macros, mix NPK. I use two Eheim liquidosers(got one of them really cheap from Ebay) for trace/micros right now.
The air pump idea is really interesting, I might try it on one of my tanks. The only problem is, none of the air pumps I used so far is really quiet.
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Truvu 100g Flourite, wet/dry, AHSupply 302w PC, PinPoint controller
10gallon15w T6+15w T8
55gallon40w T6 ODNO4x, no CO2. Discus grow out.
10gallon Tonina tank, 2x15w T6 ODNO 4x
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I will do aquascapes after I collect all the plant species and grow them to perfection.
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