Thanks Rob
My twelve tanks are on a central sump filter in rows of 4 tanks 3 shelves. The only thing I would do differently next time is to have the tanks drilled a second time for the inlet pipe instead of how I did it this time with the pipes extending over the tanks as inlets.
The main problem I had once I had built this set up this way was how to build twelve bespoke covers to stop both evaporation as well as heat loss. I got round this by cutting polystyrene tiles in to lids which sit on rails that I siliconed on to the inside of the tanks with a hole cut out for the inlet tap to pass through.
Would have been much more simpler to have just had a second hole drilled near the top of the tanks so that lids would have been much simpler with total evap and temp sealed.
Know better for next time now though.
The thing I found most surprising was how much the pipework cost though, tanks were £250 inc sump and Eheim pump, but the pipework and taps and adapters to connect the outlet pipes cost atleast the same
