I bought this bottle of Phos-free for swimming pools and hot tubs. The msds lists these in the picture. Is it okay to use? Sodium sulphate? Whats that added for?
Lanthanum chloride
- Thread starter Cory
- Start date
- Tagged users None
CasperOe
In it to win it!
Swimming pools and hot tubs are usually freshwater, aren’t they? I’d never use any chemicals in my tank that is not made for aquarium application..I bought this bottle of Phos-free for swimming pools and hot tubs. The msds lists these in the picture. Is it okay to use? Sodium sulphate? Whats that added for?
… let me know how you get on
BZOFIQ
5000 Club Member
This is used widely in the hobby, originally for Pool applications, works perfectly fine in reef tanks - SeaKlear Phosphate remover. Just read up and dont overdose.
As an Amazon Associate we earn from qualifying purchases.
OP
OP
As bzofiq said, its widely used. There are aquarium versions of lanthanum chloride but come with an aquarium markup. Im mostly concerned about the second ingredient.Swimming pools and hot tubs are usually freshwater, aren’t they? I’d never use any chemicals in my tank that is not made for aquarium application..
… let me know how you get on
CasperOe
In it to win it!
Aye, i can read that no bother
Phos-free is not a product available in the UK; the lanthanum chloride though is a part of many products over here too. Quite sure its in the Aquaforest Phosphate Minus which i use in my tank…Hope you achieve what you’re looking for!
OP
OP
I tested in 2.5 liters of tank water. I added 1ml of this Phosfree.Aye, i can read that no bother
Hope you achieve what you’re looking for!
-Before Phosfree .69ppm po4 via hanna checker
-after Phosfree. 64ppm po4 via hanna checker.
I feel like 1ml should have dropped phosphate at least half in 2.5 liters of water.
The sample was still foggy. I wonder if it needs to be clear.
BZOFIQ
5000 Club Member
That's the precipitate, skimmer would remove it from your water column.
Proper use calls for slowly dripping diluted form into your overflow and using 5 micron filter socks in your sump and skimmer to remove resulting precipitate.
Do not just dump bunch of it into your tank, you'll kill stuff.
There was a long thread on here documenting the process but I cant find it. Google it, there was a thread on here and one on RC as well.
- Joined
- May 22, 2016
- Messages
- 6,970
- Reaction score
- 10,769
yeah. this cloudiness probably means that the PO4 being bound was still attached to particles in the cloudy sample. Filtration or settling before PO4 testing should help show what's going on.
sulfate is a major ion in saltwater, but I don't know what ppm of La you'd be adding to know if you'd also increase the S in your tank water significantly enough to care about.
OP
OP
I made a diy centrifuge and spun the sample with 10 ml of water. There was a white pellet. The drill only spins 570 rpm. I added 2 drops of the Phosfree to the sample. Phos was .67ppm before. And after it was .20ppm po4.
I wonder if this product is lacking lanthanum? 2 drops in 10ml should have produced 0 po4 no?
OP
OP
Google says a drop is worth .05 ml. I added 2 drops so .10ml in 10ml of water. The product contains 11.05 % lanthanum chloride. This would be enough no?
- Joined
- May 22, 2016
- Messages
- 6,970
- Reaction score
- 10,769
I'd test it much closer to the concentrations you expect to actually use before drawing many conclusions on how it behaves.
