http://www.ebay.com/itm/Hydroponic-Syst ... 1297325344" onclick="window.open(this.href);return false;
The mfr suggests 7.8 lpm into dual air lines into one 5gal. bucket. I don't understand stuff affected like back pressures or manifold split-lines but simple math suggests a single commercial pump of 40 lpm running 8-manifold (or 4-manifold with a splitter at each) would be be sufficient for my needs. It looks like the bigger single pump is cheaper--but they are very loud (loud is not good!). The smaller pumps would be individual to the bucket (4 pumps). More total cost, power costs, and heat added--but they are quieter.
Where is the pump(s) that find this balance?
