dunno I just put stuff in last night. I am using a botanicare 20 gallon res with a heavy duty trash can liner. I don't think it really matters where the pump is but I will see. I will get pics up this weekendDonk - the way your reservoir is set up, wouldn't you get sediment gathering at one side of the reservoir as it looks like your pump is right under the fence post water exit? Would the nutrients circulate or settle in corners of the reservoir?
Just thinking.