This is my second year managing an inherited old pool that needs a lot of updating. Thanks to all that give of their time on this website I have been able to quickly clean it up and use it and when I make mistakes can easily bring it back to crystal clear. I monitor the chlorine level at least 2 X a day and if the FC is below my target of 4 in the am dosing, I target for 5 for that dose as my CYA is only 30 and the sun can consume the chlorine fairly fast even with the solar cover on. However I know the FC has not gone below 2.5. My new problem is that yesterday while dosing I noticed green algae on the floor of the skimmer intake, I took the solar cover off and while I could see the bottom it had lost it's sparkle. I brushed (which I haven't done for while because I purchased a robot cleaner and run 2 cycles a day which I thought would be better than brushing) and saw a little green cloud so I started a slam and while I am sure it will come back quickly, I am curious as to why the algae bloom started and even more, why would it concentrate on the floor of the skimmer intake where circulation is sure to be good.
My numbers are:
FC=13 (before slam 4)
CC= < .5
PH= 7.5 (actually color between 7.5 and 7.2)