Phosphate dosing
- Thread starter Sunreefer
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My Tank Thread
A few good options in these threads....
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Where To Purchase Phosphate To Dose
Long story short. Phosphates are at 0 thanks to overuse of GFO and I need to raise them. Where to purchase phosphate and which brand is best?
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Dosing Phosphates?
So I've read that you need some phophates for a biopellet reactor to actually work. My phosphates are undetectable and nitrates are 20ish. I was planning on dosing to .03 ppm. Anyone have any advice on the best way to do this? Thank you.
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SeaDweller
2500 Club Member
I have this on-hand, but haven't needed to use it.
Sunreefer
Community Member
Many thanks for the replies.
Been feeding my nano tank frozen foods. Being a true nano tank, hard to keep things in-line. So many "levers" to keep things in-line.
On another matter, at the moment battling blue-green mat algae on the sand bed. I have been monitoring my nitrates and phosphates daily. Nitrates at 5ppm stable. Phosphate move from 0 to .02ppm. Sps frags doing good to great for the most part. Just have these algae growth. Recently added Vibrant. We'll see...
In terms of phosphate dosing been debating on the following:
Neophos: Recently read the concentration has been diluted. Not to sure, I want to continously buy bottled fluids.
Seachem Phosphorous: set for fw planted tank. As such not so much keen how "clean" this would be sps reef tanks.
Powder products: have not found many data experiences or product reviews.
Been feeding my nano tank frozen foods. Being a true nano tank, hard to keep things in-line. So many "levers" to keep things in-line.
On another matter, at the moment battling blue-green mat algae on the sand bed. I have been monitoring my nitrates and phosphates daily. Nitrates at 5ppm stable. Phosphate move from 0 to .02ppm. Sps frags doing good to great for the most part. Just have these algae growth. Recently added Vibrant. We'll see...
In terms of phosphate dosing been debating on the following:
Neophos: Recently read the concentration has been diluted. Not to sure, I want to continously buy bottled fluids.
Seachem Phosphorous: set for fw planted tank. As such not so much keen how "clean" this would be sps reef tanks.
Powder products: have not found many data experiences or product reviews.
I’m dosing and since I started my Dino’s have disappeared. I had previously also had an issue with Cyano (but then Dino’s took over) which is significantly reduced to the point it’s almost where I can ignore it completely.
I don’t have enough experience to quantify the effect on coral growth.
I don’t have enough experience to quantify the effect on coral growth.
The link to the greenleafaquarium products is in the second post on this thread: https://www.reef2reef.com/threads/nitrate-phosphate-dosing.654001/. I added 25grams/2.5Litres to make the solution and am currently adding at 5ml (I think, need to check) every second day. I'm looking to reduce this in the future.
LARedstickreefer
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I dose Tropic Marin Plus NP. It’s supposed to be a form of phosphate that isn’t used by algae as easily as it is corals. I have no idea how you can make phosphate mostly useful to corals (via bacteria maybe?) but figured it was worth a shot.
Maybe a chemist could explain if this has merit or if it’s bunk?
Maybe a chemist could explain if this has merit or if it’s bunk?
Braves Fan
Valuable Member
Don't blast me 
but someone can explain it to me I see all these post about dosing Phosphates and Nitrates ,, I think how could Reefers have a problem keeping their numbers up ,, so I must be missing something ,, I put some Favia's and other LPS Corals in my tank ,, well a bit more than some if my numbers start to get below my target number ,, I direct feed some Reef Roids to the Favia's ,, problem solved ,, I have a pretty good amount of fish in the tank that I tend to over feed ,, that helps ,,
but someone can explain it to me I see all these post about dosing Phosphates and Nitrates ,, I think how could Reefers have a problem keeping their numbers up ,, so I must be missing something ,, I put some Favia's and other LPS Corals in my tank ,, well a bit more than some if my numbers start to get below my target number ,, I direct feed some Reef Roids to the Favia's ,, problem solved ,, I have a pretty good amount of fish in the tank that I tend to over feed ,, that helps ,,
Sunreefer
Community Member
Thanks for the information. It was helpful.
Started dosing phosphates into the tank - measured and tested (daily for now for a couple of weeks). Seeing more PE and growth. Was using powder form (and then mixed with RODI) on the phosphates and am liking the results. Will switch to powder form (on the nitrates) and as I see liquids being a bit costly.
IMO nano tanks do not allow for the luxuries of utilitarian fishes - TANGS.
Started dosing phosphates into the tank - measured and tested (daily for now for a couple of weeks). Seeing more PE and growth. Was using powder form (and then mixed with RODI) on the phosphates and am liking the results. Will switch to powder form (on the nitrates) and as I see liquids being a bit costly.
IMO nano tanks do not allow for the luxuries of utilitarian fishes - TANGS.
Nicholas Dushynsky
Valuable Member
Hi can I ask what mixture people use, as in how many grams per ml of rodi or where did you get the info for mixing? I was guided to James' planted tank.
I'm using potassium phosphate mixed at 0.75 tsp to 500ml of rodi, 1.3 ml should raise my 23 gallon to 0.08. I have been dosing this for 2 weeks every day and it still tests at 0.03? Is it something I just need to keep doing until it finally stops being soaked/used up? Then sits at the level I want? I'm aiming for 0.1ppm for my lps to be big and puffy again.
I'm using potassium phosphate mixed at 0.75 tsp to 500ml of rodi, 1.3 ml should raise my 23 gallon to 0.08. I have been dosing this for 2 weeks every day and it still tests at 0.03? Is it something I just need to keep doing until it finally stops being soaked/used up? Then sits at the level I want? I'm aiming for 0.1ppm for my lps to be big and puffy again.
Nicholas Dushynsky
Valuable Member
That's what i was hoping.
