good call mike using 40s would be the easiest but certainly not the cheapest solution.

i'd have to check first to see if they'd fit in my holes.

I thought you were asking about your marathon pace for 10K. Nevermind, carry on.

Holes? You have holes for your powerheads?

Anyhow, perhaps a trade would be in order, although the MP40 on my back glass where I wanted an MP10 is probably in need of a new wet side, so would be a bad deal for you, depending on the wear & tear on your MP10.

My mp10s are pretty mint I suppose I could search out a trade with cash scenario. I'd be worried the noise would be too much tho. Be a matter of comparing mine at 100% vs an mp40 at something like 50% I imagine.

The holes I'm referring too are the ones in my permanent rock wall which is affixed to the back of the tank.

Trade plus cash was exactly how I downgraded from MP60s to MP40s. I bet there's plenty of people in town who you'd be able to do that with. Used MP40s are selling on RC for anywhere between 330 and 360 bucks, so I bet you wouldn't even have to throw in that much cash.

Each one of my MP40s sounds a bit different. The loudest is the original one I purchased new, the one on the back glass is fairly quiet since it never runs over 50%. The one on my right side glass is very smooth. I've replaced the wet side bearings/washers etc on all 3 of them. I'd be willing to say that any MP40 with a wet side that doesn't have too many miles on it would run fairly quiet up to 50%. Wet side bearing kits aren't too costly, so even a high mileage one can be made to run like new with the investment of a few $$s. Dry side sounds can vary as well though, so you'd have to hear one at 50% & below to see for yourself it would work for you.

:pop2:

judging by the screenshot looks like this might be possible soon?

http://reefbuilders.com/2014/01/27/a...h-water-pumps/

looks like you have control over the entire output curve =)