Bio Pellet question. Green cyano slime

Av8bluewater

New member
I started running bio pellets a couple 2-3 months ago. I started adding 100ml then 2 then 300 ml.
This week I added some ecobak plus . Probably 500ml total. Haven't had time to evaluate so we will see how it plays out. I'm about one week in with the ecobak plus. I use some prodibio periodically. I've put two vials in this week because at first I thought it was green algae and NO3 was creeping up. Now I'm realizing/thinking this is bacterial.
I had the outlet in the refugium for a while because I read that someone had success doing that and their pod population exploded. Now I have it back in front of the skimmer because the green slime.
I have Alpha cone 250 on a 225 tank. So awesome skimmer.

In the last few weeks I've started getting green slime on walls and rocks.
I do water change 44 gallons about every two weeks. Red sea salt.

I was trying to get my nitrate to around .5-1ppm(was zero with pale corals) . It ended up getting as high as 5ppm. I am back down to about 1ppm.
Some corals are going down hill (sPs tank). Green slimer lost it's bright green.
Not as much polyp extension.
I am sucking out as much green slime as I can. Worried about a couple of corals. Setosa has white spots with green slime killing some spots.
I have fine oolite sand. I am getting the green matt slime on the sand too. Sand bed is pretty thin. I am thinking maybe I need to do more blowing the rocks to get detritus out and do more water change until things stabilize.
I'm also considering removing this sandbed slowly.
Anyway.. I am nervous about keeping the biopellets going. I am going to do another water change tomorrow and see how that goes. Some threads I've read seem to suggest the biopellets feed the green slime. That would really stink because I'll have to remove the pellets if it doesn't go away. I do have the tumble about as low as I can get it and still have all pellets tumbling. (Aqualund recirculating reactor)
Really frustrating because I've been focused on nitrate and PO4( which is .01-0.2) and still have crap growing in there like this.
Changed carbon today. Did water change two days ago and plan another tomorrow.
Tank has been running since last October.
Any suggestion would be appreciated.
 
Anyone know if high alkalinity can lead to green cyano .. or any other type of bacterial blooms?
I did two water changes this week. Siphoning out as much green slime as I can.
The only salt I have on hand is Red sea pro coral so it has alk of about 10-11.
I am hoping to get the alk down to 7-8 as I know that's where it is recommended when carbon dosing.
 
CyanoBacteria is very opportunistic...and once you have it, it's hard to get rid of. Since you are constantly dosing carbon from the bio pellets to feed your de-nitrifying bacteria, you are also feeding the cyano. Once you start reaching the sub 1ppm range of nitrates its easy to overdose the bio pellet effluent and create a cyano bloom.

I would reduce the effluent from the reactor to a drop or two every second, siphon the cyano out, and use the chemi pure cyano removal stuff. When I first started out with carbon dosing this was my solution to correct imbalances I experienced.
 
Back
Top