Design suggestions ideas

Is the 21” and 27” depth measured from the top down or the bottom up? Mine is being installed...it is 18” raised with internal 42” depth. I have. Square 7x7 with bench 3 side at 18” up from bottom depth. I realized I need either a shorter bench added where one does not exist on 4th side next to waterfall or step added from bottom to bench to allow me to get out as stepping up to 18” is too high....
 
Not to hijack the OPs thread... but is the efficacy of breaking down viruses with a UV light same as the atmospheric UV rays? At the hospital I work at they "disinfect" rooms/equipment by bringing a UV light cell into a close room for like 30 min.
Ah! Tru-D......gotta love her sweet blue glow! Well, that's very high level UV for sure....and its done after a standard terminal clean, right? The UV lights sold for residential pools are very small in comparison. The water that flows over the light may be cleaned but the rest of the pool water has no beneficial residual effects from that small UV light. So you still need chlorine- why pay for a device that's undersized and just chews up chlorine but doesn't really protect the pool on the whole??

Maddie :flower:
 
First full weekend of swimming !!
 

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