Colombo Flora Phospho 250 ml
Special phosphate fertilizer for aquarium plants — dose precisely with the Flora Phospho test
Colombo Flora Phospho 250 ml — targeted phosphate fertilization based on measurements
✅ Level: Easy — Dose based on test results. No special equipment needed.
Phosphate (PO₄) is an essential macronutrient for aquarium plants — a deficiency leads to reduced growth and weak plants. In heavily planted aquariums with CO₂ injection, phosphate can quickly be depleted. Colombo Flora Phospho provides targeted phosphate fertilization based on the measured phosphate value. Measure the phosphate level with the Colombo Flora Phospho test and add Flora Phospho as needed.
🌿 Product specifications
| Type | Liquid phosphate fertilizer |
| Content | 250 ml |
| Use | Dose based on Flora Phospho test result |
| Effect | Prevents phosphate deficiency in heavily planted aquariums |
| Brand | Colombo |
🚚 Delivery & warranty
- Fast delivery from our store — ready to use immediately
- Shipping Tuesday or Friday → Read more about shipping
- Delivery with track & trace, usually within 1–2 working days
- Problem with your order? We'll solve it together. Contact us via our customer service.
- Free shipping from €59,-
✂️ Usage tips
Measure the phosphate level with the Colombo Flora Phospho test before and after dosing. The ideal phosphate value for heavily planted aquariums is between 0.1–0.5 mg/l. Add Flora Phospho in an area with good water flow. Combine with Colombo Flora Nitro and Flora Grow Pro for complete plant nutrition in scape aquariums.
💡 Tip
Flora Phospho is particularly useful in heavily planted scape aquariums with CO₂ injection — with a high plant load, phosphates are quickly depleted and supplementation may be necessary.
❓ Frequently asked questions
Does phosphate stimulate algae growth?
Phosphate can stimulate algae growth if there is an excess. Always dose based on the test and keep the value within the optimal range for plants.
When do I need Flora Phospho?
In heavily planted aquariums with CO₂ injection and high light intensity, plants can consume phosphate quickly. The Flora Phospho test indicates when supplementation is needed.
Can I combine Flora Phospho with other Colombo plant fertilizers?
Yes — Flora Phospho is specially developed as a supplement to the Colombo Flora line, alongside Flora Nitro and Flora Ferro.
Do you have another question? Feel free to contact us — we are happy to help you make the right choice for your aquarium.
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