My pump is raised on some bricks atm (for safety in case a pipe comes loose, atleast they'll have a few hundred litres), so solids not a huge prob (but this may change).
My dad got me a plumbing kit from byap and was wonderin if it was worth takin it back (altho i've already opened it up and used the dranage kit part), or whether i should just use it and see?

Photos jono, and a diagram. F&F and I aren't too good at picturing such things, and everybody's description is different.

I can't actually put up pic's or drawings, [because I] don't have the internet at home yet and am [using] works. I'll try to explain it really well :-)
Ok, so I have a normal pond pump and have removed the filter from it as it got clogged. I currently have the pump in the FT sitting on a stack of bricks bout 3 bricks high by 2 wide (so roughly at bout the 300l mark). So atm there is not alot of solids being pumped into the gb's.
The reason i have it raised is i don't have a fail safe if somethin happens (like a broken pipe etc), so atleast this way it would only pump to the 300l mark.

Make the inlet pick up from the bottom, put an elbow in it to raise the suction pipe to the low tide mark, fit a breather at this point, then another elbow back down to the pump.

Pump will draw from the bottom of the tank (and a small amount from the breather) until the water level drops too low, then it will suck in air from the breather, stopping pumping, but not burning the pump out.

1) Will the pump be able to take the solids that fish usaully create?

2) Does it really matter if the solids are left there?

Any suggestions on pump type?
Was thinking of a float type and still have it connected to a timer as well.
Or one with a 40mm inlet and preferably 20mm outlet, but has to be able to be submersed to bout 1.5m ish.