Since the water has a greenish tint, that's a sure sign it needs to be shocked. Get your chlorine level up to 20 ppm and keep it there by testing/adding more chlorine as often as possible, but 2-3 times daily at a minimum. Keep it at 20 with the filter running 24/7 until the water turns cloudy blue and you do not lose any chlorine overnight (you know this by testing at night and again in the morning before the sun hits the pool). Then you can let your Cl drift back down to the 5-7 range but you'll have to kieep it there since your CYA is so high. I would recommend that you use bleach to accomplish this--it'll be much easier to figure out how much you need to add each time than with cal-hypo, plus you won't have to deal with the cal-hypo dust.

I don't think Fiber Clear is the same as PolyQuat--look at the ingredient label. If it says 60% poly--something, something, then it's PolyQuat. If not, it's not the same stuff.

Janet