My pond is green, like GREEN.

This may resolve itself with Elsa coming and filling me up a bit, but was wondering if I should be testing the water for something that could be bad?

What could be bad is die-offs at night in warm summer water if aeration is not present.. Can't remember your exact situation there..

Not seeing floaters anywhere.
pond is low AF but had ~6" come back in the last 2 weeks

Sounds like a phytoplankton bloom. Is it so green you can't see more than 6" down in the water?

Chances are you have excess nutrients or low zooplankton, or both.

Yes I'd say visibility is 6" exactly. Good guess.

Do I need to stock up on zooplankton?????

Depending on the size of your body of water, fish population and general health of your water prior, you have a few options.
1) Take the advice of the '48 Braves,
“Spahn and Sain and pray for rain”.
2) Nothing. Run your aerator as much
as possible without overheating the
water.
3) For my Amish customers, I use a
large hoop, cheesecloth seine net. It's
tedious and time consuming but it
works, eventually
4) Use an algaecide/chelated copper
compound like, Cutrine or Algae-Pro.
Please note, a sudden die- off of algae
can cause a fish kill. Planktonic algae
have a very high reproductive rate, so
re-bloom may occur in just a few
weeks. Several treatments may
be necessary? No matter, never treat
more than 20% of the water per
treatment and follow all labeling
instructions.

I'm definitely getting ain... Elsa is here! Maybe I should just Let It Go and assume more water will fix it.
Seining isn't an option.

Water is 80* when it's not raining, I should check it today to see if the rain so far has dropped it. Good idea. But I dont have an aerator because I'm afraid of increasing temps.

That green happened to me this year. No fish came to feed. I figured they were all dead. Sent a water sample to Esshup who said no problem. I thought he was full of BS. However, over the last month or so the water has cleared and fish are feeding. Not as many as before but more coming every time I show up and do a test throw with the feeder.

Why did the water turn dark green? No idea.

I get heavy blooms a couple times a year, starts off green and often turn to brown, and my fish stop feeding during the thick of it. I don't know why they don't feed, but the blooms tend to dissipate, or disappear completely with a good rain and water throughput through the pond.

Cool, sounds like Elsa is gonna solve this one for me tomorrow.