I've read through the process of slamming, brushing, balancing everything, etc... I can't seem to get rid of this issue, though.
First off the pool is and always has been crystal clear and all the chems have been correct except the chlorine has been kept on the low side due to lack of knowledge and not having the fas-dpd test until about 4 days ago. I started noticing what looked like dirt or what I thought was dead algae. I figured out it wasn't dirt or dead algae, it was very much alive and well mustard algae. It seems to all come from under the wedding cake steps where there was quite the algae bloom. I put 32oz of algaecide in but that didn't work either.
I removed and cleaned the steps then put them back in, I brush the pool and vacuum it everyday, I remove and spray off the filter everyday, monitor the chems constantly and I don't know what else to do. I've been holding the FC at 25ppm+ for 5 days. How long is this process supposed to take? It dropped 3 ppm last night which is way better than before but during the day it drops 1.5 an hour. When it was running correctly it dropped 2-2.5 per day. It gets direct sun all day long.
Here are some details on the pool and chem levels
Using the taylor 2006 kit
AG 24x15 oval 10,000 gallon vinyl
FC= been holding it at 25-30 for 5 days
If you need more details please ask. This is driving me nuts