Comments on: Potassium Calculator – How much does your reef tank need?

By: eric michael

eric michael — Thu, 07 May 2009 20:34:35 +0000

@Sam, Seachem Flourish Potassium is Potassium Sulfate (K2SO4) while their Flourish Nitrogen is Potassium Nitrate (KNO3). HTH.

By: sam

sam — Thu, 07 May 2009 20:13:27 +0000

Seachems Flourish Potassium is a liquid KNO3 or Potassium nitrate, not KCl. Its plant food, algae fuel, wouldn’t be good in a reef IMO.

By: gbd

gbd — Wed, 21 May 2008 02:52:38 +0000

Too funny Jeffry, that would be them.

By: jeffry r. johnston

jeffry r. johnston — Tue, 20 May 2008 03:30:31 +0000

What is iHerb KCl? I used to work at a company called iHerb in Irwindale, CA. They sold vitamins & herbal supplements and such …

By: gbd

gbd — Wed, 14 May 2008 05:47:49 +0000

Hi Brandon,

Funny you should say that I was just looking into it. I would imagine it could be mixed with KCl in the same ratio as the DIY Mag supplements in order to balance the sulfate and chloride ions in our systems. Then again with the frequent water changes most ULNS reefers use the sulfate isn’t likely to cause much harm.

I have yet to hear of anyone using it, but there are some seachem FW products (such as Flourish K) that I see could cross over to our reefs.

By: MR294

MR294 — Wed, 14 May 2008 00:36:33 +0000

Curious if you guys have heard of anyone using Seachem’s FW Flourish Potassium supplement? According to the website it is 50,000 ppm potassium derived from potassium sulfate, and it can be had fairly cheap.