Hey guys,

I have a little dilemma here.

I have an inground pool 20x40 kidney shaped 35K gal. and an Aquacal H155 Heat pump, well now I am thinking to install a Solar Pool Heater.
I don't have much space on my roof top, so I will be building a rack.

Can someone suggest the best way to do it?

I looked on "flebay" and saw that people selling kits that have 2- 2x20 solar panels in the box for above ground pool. I thought maybe buy 2 boxes, it will make it 8x20 buy 5 plywood sheets 4x8 and build it myself.

160 sq/ft for 800 sq/ft surface area isn't great is it?

Also, what is better 4 of 2x20 horizontally or 5 of 4x8 vertically?
I know that they don't sell 4x8 for above ground so I think it will be more expensive to buy 5 of 4x8 than 4 of 2x20, will there be a difference in heating?

What do you guys think?

Thanks,
B.