Lanthium dosing killed my zebra bar gobies

[MarsReefer]

This is more of an FYI than anything else in case anyone is thinking of dosing phosphates-E or equivalent. Phosphates had been creeping up after killing off my algae for a month so decided to drip some Phosphate-E over a few days to bring it down.

After the first day all my zebra dart gobies went into hiding, and after day 3 3/5 had died. Stopped dosing but the last two still haven’t shown themselves yet.

Switching to GFO now, not sure how to get the remaining phosphate-E out. Hoping my last two recover.

 

[dakoop]

Sorry for your loss. I dose phosphate rx with seemingly no issues

 

[Rjukan]

Some more info would be good, I'm curious to know what your starting phos was, and amount/duration of LC drip. Did you dose it into a sock, or into the skimmer neck?

This is more of an FYI than anything else in case anyone is thinking of dosing phosphates-E or equivalent. Phosphates had been creeping up after killing off my algae for a month so decided to drip some Phosphate-E over a few days to bring it down.

After the first day all my zebra dart gobies went into hiding, and after day 3 3/5 had died. Stopped dosing but the last two still haven’t shown themselves yet.

Switching to GFO now, not sure how to get the remaining phosphate-E out. Hoping my last two recover.

 

[Lavey29]

Sorry for your loss. I dose phosphate rx with seemingly no issues

Me too

 

[Mechano]

I use tropic Marin reduce phosphate rapid and never had a problem with it.

 

[MarsReefer]

All my other fish are completely fine. It seems they were especially sensitive to it. Wrasses, foxface, clowns, mandarins, and royal gramma are completely unphased.

I have a 130 gallon tank, phosphates we’re at 0.5ppm. I dosed 5 ml over about 20 minutes into my filter floss.

After 3 days of dosing my phosphates are still at 0.5ppm so I didn’t even make a dent desorbing my rocks and sand I guess.

 

[Dburr1014]

5ml over 20 minutes? Yikes.
Have you done this before?
Did you research how to dose lc?
Was it diluted with rodi before dosing?
No filter socks?

 

[killer2001]

I'm not entirely convinced the phos-E dosing killed your fish if you only did 5mL in 130 gallons. As of right now, I've done 2mL daily for about a month now in my 45gal with no casualties. I also have another system I am currently dosing 10mL daily and its 125 gallons, been dosing for 2 weeks now, no casualties. I do not have any Zebra Bars but I do have a Yasha Goby and Diamond Goby.

 

[Randy Holmes-Farley Verified Community Expert]

Fish problems are infrequent with lanthanum dosing, but common enough that folks should weigh the risks when considering it.

We don't really know why it sometimes happens and most often does not.