ReefMaster48
New member
So I got some liquid Phosphate (SeaChem). Does anyone know the specs on dosing? Also, what would you try to keep the tank levels at? I don't want to dose to much or to little obviously.
The formula on the bottle is 0.8 * gallons * gain in ppm.
So a good starter dose would be to target 0.1 ppm, so 0.8 * 0.1 * 50 gallons = 4ml
However, this assumes your phosphate level is 0 and your phosphate consumption is 0. In actuality, your tank's phosphate consumption is probably quite high. So when you dose 0.1 worth of phosphate, it will probably go back to being 0 the next day because your tank consumes it all. So you need to find the dose where you are dosing enough to satisfy all the phosphate consumers and add a slight excess so you get the levels to 0.1 PPM. If you overshoot and get to 0.2 ppm or 0.3 ppm that is also fine, but you don't want to go too crazy because the higher the phosphate levels the more nuisance algae you are going to get (which is better than dinos, but worse than having less nuisance algae).
For example in my tank, I had to dose 0.8 PPM worth of phosphates to get my phosphates to increase 0.05 PPM. This is because during the peak of my bloom, my tank was consuming about 0.75 PPM of phosphates per day. After the bloom subsided I currently do a maintenance dose of about 0.1 PPM worth of phosphate to maintain my levels. IE the phosphate consumption of my tank is down from 0.75 PPM during the bloom to about 0.1 right now.
So how do you figure out your tank's consumption?
You need to test phosphates everyday, keep track of the amount of phosphate you dose and then figure it out.
I think a good practice is the following...
Right before the lights come on, test phosphates, write down the result.
Then dose your phosphates (your starting dose should be 4 ml).
If your phosphate test the next comes up at 0, take whatever dose you did the previous day and add 4 ml to it.
Once your test shows 0.1 ppm of phosphates, you've found your maintenance dose of phosphates and keep dosing that everyday.
As the dino bloom subsides, your tank's consumption of Nwill go down so you won't need to dose as much. Slowly ease off the dosing and eventually you shouldn't have to dose anything.
Keep in mind you'll have to do this both for nitrate and phosphates. When you start dosing phosphates your nitrates will probably start going down as the availability of phosphates will allow bacteria and algae to grow, which consumes both N and P. However in my case I had to dose tons of phosphates and very little nitrates, but I've seen anecdotes where people had the opposite situation.
Growing GHA and the Dinos going away is exactly what you are hoping for!
You next step is to maintain the dosing, and once the dinos are mostly gone you can safely add to your clean up crew to start eating the healthy algae that is growing in your system. Or just let the algae grow in your fuge and manually export it.
Yay!
Feed your algae! Feed it!!
Dinos will blow off easily. They are single celled organisms that form very fragile strands/webs when at high density. You hit them with a turkey baster they will go flying (of course that is part of the problem, they will just attach somewhere else and don't mind being free-floating).
If it needs to be brushed off they aren't Dinos.
Got a picture?