Lanthanum Chloride dosing check

JBNY · Apr 20, 2019

Can someone check my calculations for me, They seem to point to me using way too much LC.

I am using Seaklear with a 375 G (1420 Liters) total system volume tank. So I've been testing using LC outside of my tank. I mixed up a solution of 2.5ml Seaklear with 500ml of rodi and mixed that up, then I dosed 4ml of that solution into 1 Liter of tank water. I let the 1 Liter mix with a stirbar for 5 minutes and then measured phosphates. My phosphates dropped from 0.48 to 0.21 with minimal cloudiness. Ok, great.

When I try to figure out how much seaklear to use in my main tank (1420 Liters) I get 28.4ml. That seems like an awful lot as most people are using 3-10ml.

2.5ml LC into 500ml rodi = 0.005ml of LC in 1ml of solution.

if I am using 4ml this equals 0.02ml of LC for my experiment of 1 Liter.

If I want to use this in my main tank I just make it 1420 times stronger yes? That equals 28.8ml of seaklear. But that is way too much

Any thoughts?

User1 · Apr 20, 2019

I've never used after a cycle. I did, however, use it as part of my rock preparation in some storage bins so that doesn't really count for what you want - so will let others peak to the dosing bits. I did though want to say to use a filter sock if you can to dose in. This way it will collect all of the junk there and easier to contain while not spreading through your system. I've considered dosing it a few times and everything points to using a filter sock to contain.

Also if you haven't look at total water volume not tank size. There are a couple calculators out there that will factor in tank size, rocks, sump, sand, etc and use that to run the final numbers for your dose. Good luck!