Phophate-E. Math experts need your help for proper dose

Scubabum · Dec 4, 2019

Hello everyone. I'm terrible at math and was hoping someone can help me and show your work on how to calculate the proper dose of Phosphate-E from Brightwell. Here are the instructions taken from the bottle.....

Each ml eliminates 1 ppm phosphate in 4 US-gallons of water
(250 ml treats 1,000 US-gal).

So lets say my tank is 120 gallons and my Phosphate level is .10 and I'm looking to reduce it to .05. Can you show me how to figure this out???? Thanks in advance.

mta_morrow · Dec 4, 2019

Here is the calculator a lot of us use.

http://larryl.emailplus.org/fish/dosing-instructions-phosphate-removers.html

mta_morrow · Dec 4, 2019

It gives you full dose and 1/2 dose. I use Phosphate e as well and highly recommend using the 1/2 dose and reducing over a week or so and not all at once. This allows you to learn much better how this stuff works in YOUR tank.

Scubabum · Dec 4, 2019

mta_morrow said:
Here is the calculator a lot of us use.

http://larryl.emailplus.org/fish/dosing-instructions-phosphate-removers.html

Can't thank you enough. THIS IS AWESOME!!! Bookmarked! Would still like to see the math just to learn something.

mta_morrow · Dec 4, 2019

Scubabum said:
Can't thank you enough. THIS IS AWESOME!!! Bookmarked! Would still like to see the math just to learn something.

There is a thread in here that I got it from. I will try to find it for you. Then you can ask the guy for the formula!

Scubabum · Dec 4, 2019

mta_morrow said:
There is a thread in here that I got it from. I will try to find it for you. Then you can ask the guy for the formula!

I found it. Reading through it now

mta_morrow · Dec 4, 2019

Scubabum said:
I found it. Reading through it now

Great! I just began using it a couple weeks ago as I had a major nutrient spike after 20 months. Happy to share anything I have learned. You can also follow on my build thread starting around the beginning of November.

Scubabum · Dec 4, 2019

mta_morrow said:
Great! I just began using it a couple weeks ago as I had a major nutrient spike after 20 months. Happy to share anything I have learned. You can also follow on my build thread starting around the beginning of November.

Thanks will follow, especially since we have the same tank.

mta_morrow · Dec 4, 2019

Scubabum said:
Thanks will follow, especially since we have the same tank.

Well then! I will have to follow you as well! I will check out your build soon!

Silent · Dec 4, 2019

Just for giggles 120 / 4 = 30
1 / 0.05 = 20
30 / 20 = 1.5 ml to dose

Scubabum · Dec 4, 2019

Silent said:
Just for giggles 120 / 4 = 30
1 / 0.05 = 20
30 / 20 = 1.5 ml to dose

Thanks so much Silent. Appreciate you showing me how to calculate.

Silent · Dec 4, 2019

Im sure you will never use actual math with access to the calculator app but if you are like me, I like to know the hows and whys, not just a do this or dose that mentality. Plus I double check everything. Along the same lines as measure twice cut once.

SeaDweller · Dec 4, 2019

Scubabum said:
Hello everyone. I'm terrible at math and was hoping someone can help me and show your work on how to calculate the proper dose of Phosphate-E from Brightwell. Here are the instructions taken from the bottle.....

Each ml eliminates 1 ppm phosphate in 4 US-gallons of water
(250 ml treats 1,000 US-gal).

So lets say my tank is 120 gallons and my Phosphate level is .10 and I'm looking to reduce it to .05. Can you show me how to figure this out???? Thanks in advance.

tbh, 0.10 isn't high. Are you having problems?

Scubabum · Dec 4, 2019

SeaDweller said:
tbh, 0.10 isn't high. Are you having problems?

No not at all. My phosphates are currently .06 I keep Brightwell Phosphate-E on hand just in case of high phosphate levels. I was trying to figure out the dose and used those numbers as an example.

SeaDweller · Dec 4, 2019

I've used the Advanced Acrylics version, and it works quickly. Mine was 3.0+ ppm at one point and it came down to 1.0 then 0.0 pretty quickly, but the rebound lasted a few weeks. I have a full bottle of SeaKlear cuz I thought I would need more of it, but haven't used it.

My PO4 hovers at 0.10 ppm now (which I'm fine with), but if I were you and yours runs that low naturally, I wouldn't control it with LaCl; I'd just use a little GFO, or in my case Rowaphos. Personally, with your PO4 levels I wouldn't touch anything.

Scubabum · Dec 4, 2019

SeaDweller said:
I've used the Advanced Acrylics version, and it works quickly. Mine was 3.0+ ppm at one point and it came down to 1.0 then 0.0 pretty quickly, but the rebound lasted a few weeks. I have a full bottle of SeaKlear cuz I thought I would need more of it, but haven't used it.

My PO4 hovers at 0.10 ppm now (which I'm fine with), but if I were you and yours runs that low naturally, I wouldn't control it with LaCl; I'd just use a little GFO, or in my case Rowaphos. Personally, with your PO4 levels I wouldn't touch anything.

100% agree with you. Have no plans on messing with my phosphate levels. I use a Rain2 Algae Turf scrubber and it keeps phosphates in check and my reef is thriving at my current levels. I was bored and reading the directions on the Brightwell Phophate-E and trying to figure out how to dose it. This awesome forum gave me the Calculator and math equation within minutes of posting.

SeaDweller · Dec 4, 2019

Scubabum said:
100% agree with you. Have no plans on messing with my phosphate levels. I use a Rain2 Algae Turf scrubber and it keeps phosphates in check and my reef is thriving at my current levels. I was bored and reading the directions on the Brightwell Phophate-E and trying to figure out how to dose it. This awesome forum gave me the Calculator and math equation within minutes of posting.

dude, I've seen your videos. With your tank looking like that...Leave your PO4 TF alone!!! LOL Don't even touch the bottle (unless it's EtOH), and run some GFO if you need it.