Tank struggling after returnpumps got clogged.

Kirschy17

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hey folks,

Something in my tank is off and im trying to figure out what.

I had exams last week and ive been really busy for the last to months because of that. I did basic maintenance but didnt have quite asmuch time for the tank as i used to.

In that time some kind of slimy algae started building up in the tank. I wasnt worried at all since i expected it to be some kind of cyano because my di-resin had to be changed.

After i did so the algae didnt go away immediatly but i didnt expect that anyways so i just waited.

About 2 weeks ago i noticed my 2 main returnpumps in my AIO that are responsible for about 80% of total watermovement in the tank were dead. Turned out they were clogged to a point where they did not work at all.

I luckily fixed the issue but am now dealing with its consequences.

I lost 3/4 of my acroporas aswell as my big frogspawn and a hammer. Montiporas and seriatoporas(birdsnest) look bad.

I have this red slimy algae all over the tank also covering some sps.

Might be dinos but i have no microscope to confirm.

I allways had a lownutrient system but did measure nitrates at 2-5 everytime aswell as being able to get a read on phosphates. (With my nyos test kit i cant get exact readings but i had 0,05-0.1 every time i checked.

Lastly i dont have a dosing pump. Im dosing calcium and kh manually.

All parameters were pretty good every time i checked at kh from 7-9 and cal at ~400 and mg being at 1450 (my magnesium was alleays really high even tough im only dosing bio calcium)

I would appreciate someone experienced looking onto this with me because im really struggling to get a hang of what i should be doing right now.

Tank is 65g AIO mixed reef with 2 clowns and a dwarf moray.
 
Sorry about the tank gremlin visiting you.

Are your return pump(s)? operational after cleaning them?
 
If they work ok, you should be fine.
 
I just found a bad microscope and am kinda sure i have dinos now. How do i proceed? I run a skimmer and carbon usually aswell as having a refugium. The chaeto i used to have in there died off tough...

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Waterparameters today:

Cal: 400
Mag: 1350
Alk: 8
Ph: 8,2
Nitrate: ~5
Phosphate: 0,1
Ammonia/nitrite: 0/0

I never had phophate and nitrate readings that high. Seems like my skimmer pump got clogged aswell. Changed water and cleaned the pump. Also i removed bio media that i didnt change in 3-5 months and changed carbon. Can anyone confirm dinos from my microscope pics?
 
Increase water flow and do a water change or two over the next few days.
 

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