this is a very good pump at a fair price. They do generate some noise, however it's mostly from vibration, so this can be dampened fairly easily; many dro stores even sell a little felt-like square piece to go under the pump designed for this purpose. So noise is notably more than eco 8 (yes I have used it in the past hence the grounds for me having an opinion on them, in fact I still have it collecting dust as this is typed). One thing to consider is they make outlet dividers for up to 40 outlets! I would NOT recommend teeing them off as I feel this is too detrimental to air flow, however, with your set up even if you had just ONE of those pumps you linked, with a 24 outlet divider, your air output just doubled. and with the 300L per min that can be had for the price of 3x eco8s... it would go up 500%.. and after all, the name of the game with DWC is dissolved oxegyn.
bro you are NOT ALONE. please believe it. rofl. mine has me feelin like so I keep her in the dark. need to know basis anyways, right? after all, this: gets old real quick. when all most of us want is to feel: but I digress, sometimes I getI will wait till after this harvest, the girlfriend gets jealous when I get new toys lol