Modern Reef P- Phosphate Remover 1000ml
Highly-effective mix based on lanthanum which binds phosphates rapidly and eliminates them from the water. Removes phosphate extremely fast!
Directions: 1 ml of P- in 100 liters will reduce phosphate by 0.1 mg/l. Start by dosing 0.1-0.25 ml per 100 liters. Do not reduce the phosphate concentration by more than 0.01-0.025 mg/l per day! P- is most effective in reef aquariums with a good skimmer. Monitor the alkalinity level; it can drop slightly. The Ideal dosing spot would be at the beginning of the sump or before the skimmer. We recommend keeping the phosphate level no less than 0.02 mg/l.
Tip: Applying P- diluted in osmosis with a dosing pump to spread the daily dosage would be optimal to avoid rapid changes in phosphate levels.
| Specification | Value |
|---|---|
| Product Name | Modern Reef P- Phosphate Remover |
| Volume | 1000ml |
| Active Ingredient | Lanthanum |
| Effective Range | 0.1 mg/l per 100 liters per 1 ml |
| Recommended Phosphate Level | At least 0.02 mg/l |
FAQ
How much P- should I use per 100 liters of water?
Start with 0.1 to 0.25 ml per 100 liters. Adjust based on phosphate levels and monitor alkalinity.
Can I use P- in a reef aquarium with a poor skimmer?
P- is most effective in reef aquariums with a good skimmer. Use with caution in systems without adequate skimming.
Will using P- affect alkalinity levels?
Yes, alkalinity can drop slightly. Monitor alkalinity regularly when using P-.

Grace Simpson –
I’ve used P- for three months in my 120-gallon reef tank. Phosphate levels dropped from 0.3 to 0.01 mg/l. Alkalinity dipped slightly but stabilized after I adjusted my dosing. Works well with my skimmer and is easy to dose with a pump.
Sue Edmunds –
Good product, fast phosphate reduction. I started at 0.1 ml per 100 liters and increased to 0.25 after a week. Alkalinity dropped a bit, so I added buffering. Still, it’s effective and reliable.
Melanie Anderson –
The P- works quickly and consistently. I use it in my sump before the skimmer. After a few weeks, phosphate levels stayed below 0.03 mg/l. No issues with clarity or coral health.