Phosguard

[Htbrooks1]

Hey guys, so I let my tank slip a little. Have done several water changes since. Just changed water and add new chemi pure blue and purigen yesterday. Phosphate is still around .50 or more. Using the api test kit. Was wondering if it was safe to use the 100 ml phosguard. I have a 13.5 Evo. Thanks in advance !

 

[lapin]

I dont know how much it can take up. My suggestion is to put it in for 24 hours and measure the reduction.

 

[Htbrooks1]

It's says the 100ml bag treats 60 gallons. I just don't want to nuke my tank if you think it's too much

 

[lapin]

It also says leave it in for 4 days. To be real safe try 12 hours

 

[jassermd]

Why not use lanthanum (phosphat-e or similar) and calculate the amount you need to slowly drop your phosphates.

Phosphat-E - Liquid Phosphate Remover

Overview Begins to eliminate reactive phosphate immediately upon addition to aquarium. Safe for all inhabitants of reef and marine fish-only aquaria. Each ml eliminates 1 ppm phosphate in 4 US-gallons of water (250 ml treats 1,000 US-gal). Helps facilitate the removal of phosphate from aquaria...

www.bulkreefsupply.com

Here is the link for the calculator:

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

It will help the chemi pure and purigen.

I never had good results with purigen for phosphate removal. GFO will work, but it will work slowly and the lanthanum will get you close so the GFO can work more effectively at keeping it down. I've had great results with this approach and have been using rowaphos for GFO.

 

[Htbrooks1]

Thanks guys, so should I replace purigen with gfo ? Or keep the chemi pure blue and purigen and just add the phosphate e to get the levels back right ?

 

[Timfish]

I like API for alkalinity and pH but for PO4 I'd use nyos, elos or hanna. As far as which combination of removal stuff I'd say it's more important to keep an eye on you PO4 than any particular combination or sequence. If your PO4 actually is around .5mg/l that's not something that has to be reduced immediatley. If interested here's some stuff to watch/read:

2657円まるいち 博多辛子明太子(無着色) 「博多の華」 (ギフト用) 180g Z6572海産物イクラ,タラコ,魚卵 Qoo10]　「博　まるいち　博多辛子明太子(無着色) | therichross.com

2657円まるいち 博多辛子明太子(無着色) 「博多の華」 (ギフト用) 180g Z6572海産物イクラ,タラコ,魚卵 Qoo10]　「博　まるいち　博多辛子明太子(無着色) | therichross.com

therichross.com

Richard Ross What's up with phosphate"

BActeria and Sponges

Phosphate Deficiency:
Nutrient enrichment can increase the susceptibility of reef corals to bleaching:

Nutrient enrichment can increase the susceptibility of reef corals to bleaching - Nature Climate Change

Increased dissolved inorganic nitrogen (DIN) concentrations in sea water have been linked to a reduction of the temperature threshold at which corals bleach, however, the mechanism underlying this change is not known. This phenomenon is now explained in terms of increased phosphatase activities...

www.nature.com

Ultrastructural Biomarkers in Symbiotic Algae Reflect the Availability of Dissolved Inorganic Nutrients and Particulate Food to the Reef Coral Holobiont:

Frontiers | Ultrastructural Biomarkers in Symbiotic Algae Reflect the Availability of Dissolved Inorganic Nutrients and Particulate Food to the Reef Coral Holobiont

Reef building corals associated with symbiotic algae (zooxanthellae) can access environmental nutrients from different sources, most significantly via the up...

www.frontiersin.org

Phosphate deficiency promotes coral bleaching and is reflected by the ultrastructure of symbiotic dinoflagellates

Phosphate deficiency promotes coral bleaching and is reflected by the ultrastructure of symbiotic dinoflagellates

Enrichment of reef environments with dissolved inorganic nutrients is considered a major threat to the survival of corals living in symbiosis with din…

www.sciencedirect.com

Effects of phosphate on growth and skeletal density in the scleractinian coral Acropora muricata: A controlled experimental approach

Effects of phosphate on growth and skeletal density in the scleractinian coral Acropora muricata: A controlled experimental approach

Phosphate contamination can negatively affect corals, modifying growth rates, skeletal density, reproduction, mortality, and zooxanthellae. We determi…

www.sciencedirect.com

High phosphate uptake requirements of the scleractinian coral Stylophora pistillata

High phosphate uptake requirements of the scleractinian coral Stylophora pistillata

SUMMARYSeveral untested aspects of the regulation of inorganic nutrient uptake were examined using nutrient depletion experiments with the symbiotic coral Stylophora pistillata. The total inhibition of phosphate uptake in artificial seawater lacking sodium indicates the involvement of a...

jeb.biologists.org

Phosphorus metabolism of reef organisms with algal symbionts

https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/ecm.1217?casa_token=ziDzrEEJ8g0AAAAA%3AHnfuGTIntMdqOtx2ij-lnoTh7qVg8VBhYFz98e60zfBEvx5IcIVGhmlpUYmzIJuqUNVm0sG8_0vth6lq

Sponge symbionts and the marine P cycle

Sponge symbionts and the marine P cycle

Marine sponges are ubiquitous colonizers of shallow, clear-water environments in the oceans (1, 2). Sponges have emerged as significant mediators of biogeochemical fluxes in coastal zones by virtue of respiring organic matter and facilitating both the consumption and release of nutrients (3, 4)...

www.pnas.org

Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges

Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges

Coral reefs are highly productive ecosystems that raise a conundrum called “Darwin’s paradox”: How can high production flourish in low-nutrient conditions? We show here that in three abundant Caribbean sponges, the granules that have been commonly observed in sponge tissue for decades are...

www.pnas.org

 

[jassermd]

Purigen is good for dissolved organics and other toxins. I have always used it along side carbon and GFO to help keep the water clean in my LPS dominant mixed reef.
I would forgo the phosguard and go with GFO; it doesn't deplete as quickly and isn't aluminum based.
My recommendation would be to use lanthanum 1/2 dose day one, then 1/2 dose again day 2 and then add the GFO. Measure phosphates daily to make sure you don't drop them too quickly.

 

[Htbrooks1]

You guys are awesome! Thanks for all the info. So just so I'm correct you would do half dose one day, half dose the next and keep chemi pure and purigen and add gfo ? What is a safe number to drop daily and what technically is my target goal ?

 

[jassermd]

Some would argue that the chemical pure with purigen is overkilll. Both work in a similar fashion… there is no harm in using both.
1 /2 dose of lanthanum is the safe way to gently drop the phosphates. By doing a 1/2 dose day 1 and measuring again on day 2 and using a 1/2 dose again based on the new reading, you’re not moving things too quickly.
GFO will take a couple days to work so the lanthanum give you the head start and allows the GFO to work more efficiently at keeping them down for the long term.
You don’t want to drop to 0. My goal is 0.1 but I have a LPS dominant reef and it much prefers a little higher nutrient level.
0.05-0.15 is a good goal.
Also, be sure to read up on using GFO… it’s much more effective in a reactor and there are instructions on the rowaphos label that explain dosing for either a reactor or a bag.
Good luck!