Success with Chaeto and GFO?

TunaC

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I know, I know, phosphate troubles AGAIN.
Thanks for reading this, will give as much detail as possible.

90 gallon, 1 year old tank with 8 fish and growing a variety of acros, montis, euphilia, chalices.
This is my first reef tank, lots of issues in the first few months, but now I do feel like I am having success with corals and fish and mostly enjoying things. I started this tank trying to follow the Triton method.

Sump is a 34g with ~10-12 g set aside for Chaeto. No filter socks (occasionally will run one). Skimmer. Some extra biomedia in the sump.
Nitrates are great, usually in 5-10 range. (All other parameters are fine, I send out ICPs periodically to Triton and replenish as needed). Ca and Alk are 2 part on dosing pumps and from what I see are very stable.

A few months back I attempted to run GFO for phos control. Brought the phos down perfectly but basically wiped out my Chaeto.
Since then I started dosing trace elements daily (per Triton recommendations) + Iron which I found was necessary for the Chaeto.
I feed about 2 frozen Mysis cubes per day (sometimes I will rely on an auto feeder when out of town etc, but volume of food is similar).
I have rarely been doing water changes. Aside from the phos levels going up, I notice no difference.

More recently I have been relying on lanthanum chloride for Phos control. Works well, but I'm still running a little on the high side and this compound is somewhat of a PITA as I am nervous about dosing a lot of the stuff at once so end up tinkering with my phos levels on a multiple times a week basis. Too much maintenance!

My phos levels are 0.15 - 0.4 but that is with pretty active management with the lanthanum chloride. The level would just continue to skyrocket if I didn't stay on it. (was as high as 0.9 several months ago when I wasn't being a "good reefer.")

I have read that GFO and macro algae can be tricky together. Last time I tried, it failed. At that time, however, I was not dosing daily trace elements and I was not dosing Iron. I'm considering trying the combination together again, but hoping some sage individuals can tell me if that is / is not a good plan.

Who has had success with GFO and Chaeto? What did you do to pull this off?

I do not want to give up on the refugium. The amount of life in there is spectaular. BUT I gotta find a better means of keeping my phosphate down. Thanks you (very much) for reading and any advice you have.
 

goosemans

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What light were you using to grow the chaeto? I’ve been using this light for over for about a year and half and it’s done a great job.


At first I was using brightwells chaetogrow and that seemed to help it take off, but after about 4 months I stopped using it to see what happened. Nothing changed so I don’t use it anymore. Doesn’t hurt to try though. Also another thought. What foods do you feed?
 

bobnicaragua

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My refugium does a good job keeping my nitrates down but my phosphates will just keep rising. I keep 2 bags of GFO mixed with carbon in the sump and change one bag out every 2 weeks. I also dose trace elements.

Phosphates are usually below .1

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TunaC

TunaC

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What light were you using to grow the chaeto? I’ve been using this light for over for about a year and half and it’s done a great job.


At first I was using brightwells chaetogrow and that seemed to help it take off, but after about 4 months I stopped using it to see what happened. Nothing changed so I don’t use it anymore. Doesn’t hurt to try though. Also another thought. What foods do you feed?
I have a Kessil refuge light, probably overkill but it’s definitely not a light situation lol. Food is usually frozen mysis. I was using some chaetogro on top of the trace elements but a couple got too high / out of whack so I stopped the chaetogro and haven’t had issues (with the chaeto). Thanks !
 

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