Can't grow Chaeto to save my life.

LouH

LouH
I've been running a reef tank for approximately 6 years now and have had good success with pretty much all corals except for Acros, which seem to do fine for 4-6 months, grow decently during that time only to lose color and eventually die. I run a 30 gallon refugium and a 14" deep sand bed in a small Brute garbage can. My tank is 117 gallons, and I have a nominal water volume of approximately 100 gallons. I do a 20 gallon water change once a week. I run ozone, an ASM G-3 skimmer, carbon and GFO.

On to the reason for the post. I have never been able to keep Chaeto alive for more than a month or two. I've tried to grow it in the refugium, in the deep sand bed area, and even in the main display. Many flow rates have been tried, all without success.

I've never measured nitrate at any concentration ever using a Salifert test kit. I don't test for phosphates because I've never found a colorimetric test that gave me a result that I trusted. It's not that my tank is free from algae. I have some hair algae in the refugium which receives some natural light through a nearby window for several hours a day. It isn't anything significant and it does not take hold in my main display. I do get some green and brown slime algae, possibly Cyanobacteria, in the main display. It typically shows up a day after a large feeding for LPS, but this always recedes after a couple of days. Lately I have had a brown slime algae growing on the rocks and walls of the deep sand bed container where I've been trying to grow the Chaeto. The fact that this stuff grows right next to a dying ball of Chaeto (and at times ON IT)! It's frustrating.

I probably wouldn't care and would stop trying if it weren't for the fact that I can't keep Acros. From what I understand, a big ball of Chaeto keeps the water clean and is a good plankton generator. I've seen huge balls of Chaeto in other reefer's tanks and they were over-run with pods, Mysid shrimp, etc. These same reefers have given me pieces of their Chaeto, but again, it only lasts for a month or two before it shrivels up and dies. I use a commonly used compact fluorescent bulb (6500K) several inches over the Chaeto and change the bulb every 6 months. What is the issue? I have the same poor result in my 30 gallon soft coral tank where Bryopsis has thrived for years. :headwalls:

Lou
 
I use the Ecosmart 4900k from home depot and the darn thing grow out of control, have to trim them weekly.
 
like said above go to HD and grab a bulb from them. these bulbs grow algae like crazy. aquarium lights are different from the ones at HD because they dont encourage algae growth as the HD ones do. i use a Phillips T-5 bulb from HD and my fuge needs to be trimmed once in awhile to keep the growth down. when i first had the aquarium light the fuge was lit 24/7 and no growth what so ever. but the second i switched i had to change the light time from 24/7 to 12 hrs every night just because i was getting tired of trimming it.
 
My guess would be the GFO is keeping phosphates too low for the chaeto to have any to utilize.

I initially thought this too, but he has other algae growing, so that isn't it in my eyes.

I had trouble getting chaeto to grow in my tank for quite a while also. I have no algae in my tank, run GFO, a DSB, oversized skimmer, and my phosphates are zero.

I do feed pretty heavily though. I now have Chaeto growing quite well and I only changed one thing...lighting, more of it. I doubled the amount of light my Chaeto was receiving and it took off. I have 112 watts over my refuge that is about 3' x 18" and the Chaeto ball takes about about half of the space, sometimes more if I slack on trimming it. My bulbs are 6,700k T5's.

This may not be the case for you, but just something to consider.
 
Interesting. We had a 6500k CF bulb over our fuge until a couple months ago and our chaeto was crazy. Now that we have LEDs over it, the dragon's breath is going nuts too. Phosphates will measure zero when they're being held by the algae, so you really can't go on a zero phosphate reading when algae is present. When our dragon's breath took off, the chaeto suffered for about a month because it was being outcompeted by the dragon's breath and the feather caulerpa. We yanked the feather caulerpa (and are keeping it down now) and the chaeto took off again. Maybe all the other algae is outcompeting the chaeto for nutrients.
 
I'm runing a TCP compact fluorescent. The box says that it is equivalet to a 75 watt incandescent bulb, although it only draws 16 watts. The bulb temp is 6500K, and it actually lists the PAR as 38, and it puts out 750 Lumens. This is the exact bulb I'm running:

http://www.prolighting.com/1p381665k.html
 
I also forgot to mention that I feed my tank nightly with the Borneman recipe (approximately 1/4 tsp of actual food matter). I rinse off the food before slowly adding it to the tank after it sits in fresh tank water for 5-10 minutes. Very little food hits the sand, and hermits and a watchman goby take care of that. As far as fish, I have the following:

- 1 medium yellow tang
- 4 medium blue chromis
- 1 watchman goby
- 2 medium clown fish

Inverts include the following:
- 1 rapidly growing Dersa clam 6" end to end and a 4" mantle width when fully open
- 1 7" dia rose anenome
- 5 8"-10" tiger tail cukes (the original has split multiple times)
- dozens of snails which reproduce costantly
- a dozen or so blue legged hermits
- 2 small (2.5") Lobo. LPS
- 1 med-large (6" dia) rapidly growing hammerhead
- 2 rapidly growing hand sized Montipora colinies with verticle fingers reahing 6" above the base structure
- multiple small SPS colinies not doing that great(birdnests OK, Acros not so good)

That's about it outside of a couple of colinies of Zoos, and a dozen Ricordea shrooms.
 
I would also comment on the lighting. I run a light over my fuge 24/7. it is an old marineland 24" T5. Never change the bulbs on the fuge neither. When I ran GFO my chaeto would die. Got sick of GFO and tried biopellets, the time in between my chaeto came back in full swing then died off again when running biopellets. Now that its been a over a year with the bio pellets the chaeto came back in full force. I hear and have seen chaeto die off because of GFO and biopellets. but with time and a 24/7 light on it, it will recover and come back.
 
I run a 6500k CFL bulb over the fuge, quite heavy flow, and have dark green cheato that does not shed. I saw no reaction to the GFO.
 
My fear with stopping the GFO is that my phosphates will climb and the Acros will suffer. On the other hand, if the Acros aren't thriving to begin with, maybe growing Chaeto has a greater net benefit than running the GFO. Outside of that my big worry would be the health/growth of my two big Monti colonies. Right now they are the centerpieces (is that a word?) of the tank.
 
My fear with stopping the GFO is that my phosphates will climb and the Acros will suffer. On the other hand, if the Acros aren't thriving to begin with, maybe growing Chaeto has a greater net benefit than running the GFO. Outside of that my big worry would be the health/growth of my two big Monti colonies. Right now they are the centerpieces (is that a word?) of the tank.

I think you can probably do both if you get them in the right balance. How much GFO are you using?

Chaeto does best with quite a bit of flow. I have a powerhead in my refuge to keep the chaeto moving a bit at least.
 
I'm running 200g in a TLF reactor driven by a small Eheim. I can move the Chaeto to my central sump which receives all return flow to the main display, so I'll get the most flow there.
 
Cheato needs iron to thrive. Most people go through this. Try adding a capful of flourish iron. I bet you Cheato starts growing like mad.
 
+1
I grow alot of various macros in my tank. I dose iron weekly. If I reduce my iron my growth slows to a crawl.

Cheato needs iron to thrive. Most people go through this. Try adding a capful of flourish iron. I bet you Cheato starts growing like mad.
 
The reason most people have chaeto or other macro algae is to take up phosphates and nitrates to keep them out of their system. Just having chaeto growing in your tank is not going to make your SPS do better unless it is taking up the nutrients that are harmful to SPS. I wouldn't think adding iron to make the chaeto grow is going to help your SPS any (unless they also benefit from the iron), since it will be growing because you're adding iron rather than because it's taking up the SPS-harmful nutrients. I personally won't dose anything into my tank that I can't test for since it's too easy to overdose those supplements and harm your tank.
 
I never could make chaeto grow for the most part. I've had a couple times when it would get going for a while and then just stop, with no real changes made. I don't even try anymore.

I don't run GFO, vodka, bio pellets, bacteria or any of that. I do run a monster skimmer for my size tank though. But I feed a lot too. My nutrients are zero as measured by Salifert and acros grow fine, albeit slower and more pale than I'd like.

Bottom line is if chaeto wont grow don't worry about it, you don't need chaeto.

JMHO
 
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