View Full Version : Strange algae

09/26/2017, 09:28 PM
I've been using AF products for about 2 months now and a strange green-brown algae started growing. It's not cyano, but there is some slime like strings floating around. Maybe a bryopsis. I really hope it's not dinos. The only harm is has caused so far is it seems to be growing on a granulosa frag that wasn't doing so good. I'm not entirely sure it's still alive. PO4 ~0- hanna, NO3 ~5 -salifert. Nitrate down from 20 about a month ago. I'm slowly introducing zeolite media. I also added 2 Liters of siporax with the intention of slowing removing my live rock from my sump. I started dosing Build twice weekly, and amino acids, power food, and energy once weekly. The algae seems to have a bio-like film in it that reminds me of the "mulm" that builds up using zeovit. Zeozym and coral snow would normally break it down. Is there an AF product to combat this? I've started cutting back on my photoperiod and intensity. Thinking about investing in a sea hare. Any suggestions? Im afraid to keep dosing any additives at this point.

09/27/2017, 01:26 AM
Hello, Can you please show your tank and corals and photo of this algae?

09/28/2017, 12:24 PM
Here's the tank... it's just a frag tank. 24"x24"x10" with hand built sump. Approximately 40 US gallons total. 40lbs dry rock that I cured myself for 2 months. Started July 4th, 2017. Didn't start AF until about a month old.

09/28/2017, 12:26 PM
Rocks with algae and some possible slime.

09/28/2017, 12:27 PM
Granulosa frag with algae growing directly out of body of frag.

09/28/2017, 12:31 PM
Top down pics.

09/28/2017, 12:46 PM
Lighting is an ATI sunpower dual nanobox hybrid. 2 blue+, 1 coral +, 1 purple +. T5 all on 8 hours during day. Bulbs about 4 months old. Leds ramp up to 40% and back down over the course of 10 hours. Dosing schedule is pro bio s with np pro every other day, one drop each. I rotate with pro bio f, 1 scoop. I was using power food 1 scoop per week but cut out for now. Amino mix, energy dosed 1 drop per week, usually with 1 drop build. I yse kz iodide complex, 1-2 times per week, and kz sponge power 1-2 times per week. 4 gallon water change with AF probiotic salt once during weekend. 0 TDI.
Salinity 1.026
KH 7.9
NO3 5
PO4 0
K 380. Just started dosing kalium.
I used only 2/5 the recommended dose of zeolite media using stacked method with carbon and PO4 remover. Skimmer is deltec sc 1351 skimming super dry.
Flow is x2 mp10s with 6 second counter pulse on opposite sides of tank and vertex mocean return.

09/29/2017, 02:26 AM
System looks not matured. How long is this tank running? When did you put first corals after start?
Do you know your NO2 or NH4 levels?

09/29/2017, 01:08 PM
Started tank july 4th, 2017. Srarted using AF products after about a month old. I checked nitrite and ammonia at 1 month and they were undetectable. I added corals at about this time. When I started using zeolites i noticed corals looking brown and withdrawn. Colors are finally coming back and polyp extension is noticeable during the day. I just have algae now.

09/30/2017, 09:01 PM
I decided to get out the turkey baster and see if i could blast off the algae. Most of it blew right off. I'm pretty sure it's buildup of mulm sitting on a little bit of hair algae because my corals went crazy when it was blowing around in the tank. Zeozym helped with mulm management in my last tank. I rechecked NO3 today. It's 0.1. I noticed some corals are getting back really nice colors. I've cut my lighting back to 6 hours of t5s. Leds at 10%. This seems to be working.