Not a problem.

Generally, it's better to plumb in parallel. And, most solar systems should be done that way. But you do run into situations where it is simply not practical, like my pool.

I've spoken to FantaSea that they should re-consider how they plumb the solar deck. I don't know if they will--it's not their prime concern...right now they are having troubles replacing the fabricator for the solar panels, and it's hard to find plants that can handle the large blow-molds they use. It's a pity because they create a really unique pool choice. I get most of the benefits of an in-ground pool--it's 16x40, rectangular with a deep end, but few of the hassles--like the tax assessment increase they hit you with for I/Gs!

My conversion to a split system required minimal expense. You see the second Tee in the pic I posted earlier, the sluice valves and a few common fittings, and some extra hose. At the other end of the pool, I added two standard returns, and had to buy a hole-saw to cut them in. Each "side" of the system has its own return at the far end of the pool. The original return, at the near end, can be plugged. But I converted it to an overflow drain.

I simply routed a piece of hose from the return up the maximum height of the water that I want, then down to a drain. It's shaped like an upside-down sink trap. If I get too much rain, I don't have to worry about it overflowing and doing water damage, it's self-leveling.

So, for maybe $50-$100 in tools and fittings I vastly increased the efficiency of my system.