What is this?

[poolmedic244]

Ive left the solar blanket on my pool for a few weeks as the weather hasn't been great since we opened the pool early April.

My FC is at 4.5, the water is clear, and the cartridge has been cleaned. Recently, I came out and found this yellowy tan sludge on the cover (bubble side facing the water) with some stuff on the walls. I also noticed a larger area on the top side of the cover.

I power washed the cover before these season.
Any idea what this s**t is?

 

[JamesW]

Probably pollen.

 

[poolmedic244]

Really? Pollen gets this consistency? That would make me very very happy...I thought it might be mustard algae

 

[JamesW]

More likely to be pollen than mustard algae, in my opinion.

 

[PoolStored]

I concur. Pollen.