my fc level has to be high not sure exactly how high though

when I test my chlorine I only have a leslie cheap o test kit but it turns dark orange so I'm guessing at least 15 ppm. The black algea is gone it's just the roots that I cant get inbedded in the concrete.

I'm getting a barrel of 15% sodium hypo wednesday from a friend at a plant near my house, that they use for treating drinking water. I'll try again next weekend.

Chlorox is getting high around here it's 4.30 for a 196oz of ultra at home depot and lowes and about 20 cents cheaper at walmart. I found some 3% value time bleach at local market for 1.50 for the 1.96 oz.

I think I dumped 18 196oz bottles of chlorox ultra and three one pound packs of hth super shock in my pool from friday to sunday it made a expensive weekend.