Is Green Cyano toxic to inverts?

[kartrsu]

I've got a tank that's gone 2.5 months after cycling. Going through the ugly algae phase, specifically green cyano. I'm wondering if this stuff is toxic to shrimps or other inverts. I had hermits that didn't last in the tank and my shrimp now is acting all funky, being clumsy and all. Acclimation has been good with temp controlled slow drip for 30 minutes to an hour. Thinking I need to pull out my inverts right now. Also did some microscope work and I have a minor case of ostreopis dinos. Thanks for the help everyone!

 

[taricha]

cyano much less likely to harm CUC than dinos. Microscope pics of your green stuff?

 

[kartrsu]

Thanks @taricha ! Here are some photos of the algae I'm dealing with below. Sorry for the crappy photos.

I'm struggling with low nutrients in my systems (NO3: <0.2ppm, PO4: 0.04ppm). My tank is 2.5 months old. I was running a refugium with chaeto during the whole time and I must have stripped a lot of the nutrients out. I removed my chaeto and no longer doing water changes. I'm also increasing feeding. I think some this is may be the imbalance as the microbial war continues. Should I let it play out on it's own? Also I noticed my pod population has kind of evaporated (maybe from dinos or hiding?)

Green stuff that is usually found all over the sand bed.

Brown stuff. Grows high on the rocks with a mucus layer surrounding it. Traps air bubbles at end of day. Looks like ostreopis dinos.

 

[kartrsu]

The dinos seem to be pulling back. Odd since my nutrients still seem low, but I've been feeding like 3x more than usual. My cyano got way too out of hand in a week, so I did a deep clean, vacuuming like 95% of it out. Seems like a good reset, but how have people managed cyano in a new tank? When do you manage it and when do you let it run its course?

 

[taricha]

yep. green cyano and ostreopsis dinos. dinos could well be why the pod population decreased.
Regarding "letting it run its course", In my opinion, it's never a bad idea to vacuum the nuisance out, and even the most conservative treatment should include that.

 

[kartrsu]

Thanks @taricha! I did a quick cycle of another fallow tank and used the resulting water to boost my nitrates to 5ppm. Corals actually looking better and dinos are controlled. Cyano is slowly coming back but I’ll keep up with the water changes to fight them back. Probably have to readd pods in a week or so... sigh

 

[taricha]

let dinos get well cleared out before adding back pods.