I need help!

piscesblue

Member
Ok, as many of you know, my reef has been cast into a life or death battle against the unmerciful, invading army of green hair algae. I'm going to make this a thorough post and try to include the backstory and what actions I have taken as general in this operation.
5 weeks ago I decided to "experiment" with keeping a small (10") snowflake eel in my reef. I took out all fish except my 6-line wrasse to save them from the eel and to keep the bioload down. The eel did great, adjusting well and not trying to kill my shrimp. He did eat my 2 emerald crabs, reducing the natural algae eating lifeforms in my tank. At this same time, I upgraded from 144w of 1yr old pc's to 192w of new pc's, increasing the light in my tank by immeasurable amounts. After 2 weeks, I noticed hair algae gaining a foothold on the gravel. It was obvious at this point that the eel was not going to work. I took him back, got my pygmy angel back and a red scooter blennie and did a 50% water change. The water was so clean, my skimmer did not work for a week. I had to go out of town for the 4th, leaving my tank unattended for 4 days. When I got back, the hair algae was still there and trying to strengthen it's position. The length has yet to grow to 1/4 inch, so it was just growing in thicker. I went to 3 stores around town until I could locate some emerald crabs, purchased 2 and tossed them in. After a week, the algae grew a little thicker. I went back to the store bought 3 more hermits and a clump of calpera and I am still unable to combat the invading army effectively. It's been a week since I added the hermits and calpera with no luck. I'm at a point were I need help. My scooter died (never been able to keep one alive for more than a month, always starve to death) and my serpent star is fat and happy. My corals only showed a small sign of unhappiness this morning, confirming my scooter died and the tank spiked. The algae has gained ground, appearing on 2 rocks that are only populated by some maroon encrusting algae. None of it has managed to grow in length, but it is managing to spread. The only thing I have yet to do, that I know of, is shorten the lighting period. I currently run the lights for 11.5 hours a day and have been for the past 1.5 years. How much should I cut the light back by? I only have mushrooms, stars and leathers. My tank is occupied by two 1.5" fish, a pygmy angel and a 6-line wrasse, 4 shrimp, 2 emeralds, 1 green serpent star and an army of hermits of mixed colors.
Please help me fight this horrible battle. It's the first time this reef has ever seen hair algae since being setup 1.5 years ago. My first attempt at reefkeeping was ended by this same threat 3 years ago and I don't want to give-up this time.
Here is a pic of the battle being waged in my tank. The emerald is doing his best to beat back the invading army in this pic:
 

demosthenes

Active Member
I know it won't look good, but I would just let it run its course. Maybe strengthen the cleanup crew, but that will not totally eradicate it. IME the best way to beat hair algae, is to just sit back, take your losses, and eventually it will go away. I would say if you leave it alone, it should dissipate fairly quickly. Also, test for phosphates, you never know.
 

striker

Member
What kind of water did you use for the 50% change? I would add a couple of more emeralds and look into any other natural animal that combats that type of algae. I'd also cut the lights to 4-6 hours. It seems to me that they are the cause for this algae bloom. After a couple of weeks hopefully things will go back to normal. I don't think you should worry that much. I'm almost 100% sure it's because of the lighting. Good luck!
 

piscesblue

Member
I can live with the site of the algae on the floor of my tank, but I personnally know how fast it can get out of hand, growing inches in length, smoothering everything in it's path. I have been patient, 1 month now and have beefed-up the cleanup crew. Thanks for your suggestion Demosthene, I'll make sure to test for phosphates soon.
 

piscesblue

Member
I use only ro/di water premixed with salt from my VERY TRUSTED LFS. I always have and always will do it this way as long as I live within 30 miles of this store. This store only carries SW supplies, fish and corals, doing most of his business by designing, building and maintaining large aquariums in public places. Will cutting the lights back by half shock the corals?
 

striker

Member
I doubt cutting back will hurt the corals. They are low light corals. Just make sure you keep a close eye on the tank during the next few weeks. Gradually increase the lighting periods until you are back to normal and the algae has been defeated. I also made a mistake earlier. Emeralds are best for combating bubble algae. I'm not sure what attacks hair algae but I did read something about a cucumber that does a great job against it. I think it's pretty tough to find and forgot the name but with a little research you should be able to locate it.
 

piscesblue

Member
Emeralds are also great for hair algae. Thanks for the advise, sure wish I didn't have to leave my tank unattended again this weekend.
 

bradsmack

Member
Alright i went thru this experience myself heres what to do. First of all get yourself a Lawnmower or Bicolor Blenny, Then get yourself about 15 snails, and 10 more blue or red leg hermits. I saw in the picture that the algae was growing on the bottom of the tank on the gravel.. all you have to do is turn over the gravel and the algae wont grow without light!
Also what additives do you put in your water if at all?
If this doesnt help, take your rocks out and use a bristle brush to brush the algae off!
 

piscesblue

Member
Thanks for the input. In the tank I gave up on, I had to scrub the rocks weekly. I refuse to let my tank deteriorate to that level again. Whats the point on having a reef tank if the rock is scrubbed bare.
 

anthony812

Member
Hey picies blue i think i can help you you. Well this is my opinion and i went through the same phase except on rocks. What i did was small water changes with ro water weekly. I dose kalkwasser and got me some red hermitcrabs. Also the rocks taht had immense algae on it i would turned around. That meant that i shaded the algae area i turned it from the light. And guess what i barely have much algae left, because if hair algae slows down and filementous slows down calcareous grows really well and soon dominates :) .
Good Luck
 

anthony812

Member
o yea also i have a algae blenny but i found it really helps in eating the sand and spitting it out which cleans the algae a litte. And dont try to raise those scooter or mandarins. They need large system with tons of pods to eat. Thats probably why yours died
 
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