Okay question, I have noticed since it has been consistently hot like over 90 95 degrees outside, the pool is about 90 and noticing greenish tinge and what looks like algae. So I did the overnight test and everything came back good I didn't lose any chlorine. My cya level is 40 so my chlorine level is between 5 and 7. But I'm still getting this greenish tinge in my pool. Just clean my filter out I have a cartridge filter and it was nasty green. Since my chlorine level is 7 should I be throwing in a lot more to try to battle this?