Lathanum Chloride & Kalk Dossing

[saintperez]

I've made incredible strides in dropping my phosphates from .79 to .04 in a couple of weeks using Lathanum Chloride, thanks Randy for suggesting. Now my questions, is there any hazard/danger in using it long term in my ATO reservoir which I add Kalk to. I could see using half the dose 2.5 ml/ Lt. for maintenance. Much cheaper than GFO.

 

[Randy Holmes-Farley Verified Community Expert]

Unfortunately, I don't think you can put lanthanum into limewater without precipitating lanthanum oxide/hydroxide from solution, removing the lanthanum and lowering the alkalinity.

 

[saintperez]

Thanks Randy, that's what I was afraid of. Furthermore just spoke with Lance Ichinotsubo at his shop and he told me the Lathanum will only bring me down to a certain point then the Po4 would plato. So I will continue dosing for a mother week to test his theory. Super nice guy by the way.

 

[Randy Holmes-Farley Verified Community Expert]

You're welcome.

I don't know about the plateau issue as I think some people have taken it pretty low, but I've not studied what happens at low phosphate values to lanthanum phosphate/carbonate precipitation.

Happy Reefing.

 

[mike007]

lanthanum How this best way to dose and how much?

 

[saintperez]

Mike, I can only describe my experience. If you search elsewhere you will find precise details. But here goes:
Ingredients:
SeaKlear Lathanum Chloride: Amazon.com : SeaKlear Phosphate Remover CR Treatment Solution for Pools, 1-Quart, includes 4oz bottle of natural Clarifier : Swimming Pool Clarifiers : Patio, Lawn & Garden
Syringe for measuring in ml.
1-2Liter container with measuring markings for Liter.
RO/DI Water
Method to fine tune drip dose like IV. I got the IV and drip line on Amazon.
MOst Important: 10 micron filter sock.

Recipe is 5ml/ liter of RO/DI water. I did 1-2 liters at a time, then check Phosphate. Repeat.
Drip rate was about 1 drop per every 2 seconds into the 10 micron filter sock (very impotant)

Very important also, do yourself a favor. Get a Hanna Phosphate tester: Hanna Checker Phosphate PO4 Colorimeter - Bulk Reef Supply

 

[mike007]

Thanks for the info. I have using a Hanna low range tester and it also reads zero. I don't know if i trust it.

 

[saintperez]

One thing to watch out for that I was told about today and just realized while cleaning my glass. Overused and it will bind a cloud unto your glass. I was able to take some off but I expect it will come off with time with more cleaning. I can't imagine what it might do to Acrylic. Needless to say, I'm officially switching to GFO now that it's a manageable level.

 

[Randy Holmes-Farley Verified Community Expert]

I agree that trying to get the solids out with a sock or other fine filter is important. Also watch alkalinity as it can reduce it.

Be sure what you use has lanthanum chloride as the only ingredient listed.

 

[saintperez]

Also, this should be only in extreme cases. I was told that fish gills could be affected using this. I think I'm seeing the proof, my fairy wrasse has been lying on the sand bed today. All other marine life look OK so far.