this is one case where the pool store would come in handy !!!
I do not understand. You should never let your FC level drop below the minimum for your CYA level ... and your CYA is so low it is off the chart for a SWG pool.
Sounds like you probably need to only run the SWG 30-60 minutes each day ... assuming the FC was well mixed.
Just as a guide, I let my SWG run at 20% for 10 hours a day. That would be like 100% for 2 hours.
I would imagine that sun burning your chlorine off is a pretty big deal in Kuwait!
How did you get a FC of 3.75? that is not a normal increment.
25ml sample makes each drop 0.2ppm for the Taylor tests ... or 0.5ppm if you use 10ml of water.
Which kit did you end up with?
Add your test kit info to your signature.