Two Unidentified types of growths

[Polks]

Hi,

I was hoping someone could tell me what these are.
1) [1 photo] Purple seaweed type stuff - seems harmless but is growing quite fast. Maroon clown is now hosting it, which is cool.

2) [3 photos] Weird light green bubble/slime balls - these have been around for awhile and seem harmless but not sure if it's a bad sign... the 3rd photo seems like the beginning of the formation. Once formed, the balls don't move.

Thanks!

[CarmieJo]

I don't know what it's called but I had the purple stuff for a while and then it went away. It didn't seem to hurt anything, even when I started declining.

I think the green things might be sponges. In my opinion sponges are beneficial and are good water purifiers. Dime people say that if they get exposed to air they die and then break down into toxic byproducts but I've never had that happen.

[fat walrus]

It's algae.

[CarmieJo]

Walrus! I've missed seeing you!!!