Plant Fertilisers

[conorod]

I have an 80L tank to which I recently added several plants. I bought Easylife Profito fertiliser which says that it does not contain any N or P, and I see they sell these fertilisers separately - my question is do I need to get those also (or is there something I should be testing/looking out for, to see if I need to add them)? Or is profito on its own sufficient?
In case it's relevant this is what I currently have in the tank:
Fish: 12 Neon Tetra, 6 Bronze Cory, 3 Amano Shrimp, 2 Nerite Snails.
Plants: Bacopa Caroliniana (X2), Water Sprite (floating), anubias nana, java fern.
I do not add CO2 in case that's relevant.

 

[StevenF]

What is your water GH. I am not failure with Profito fertilizer but plants need calcium and magnesium and most fertilizers don't have calcium. And many have minimal magnesium in them. If your GH is less than 3 use of a GH booster would help.

Monitor your nitrate with a test kit. You don't want to see zero. Try to maintain a Nitrate level of 5 to 10parts per billion (ppm). If your nitrate doesn't go down to zero your fish waist probably producing enough nitrate and phosphate. For phosphate you only need 1ppm.. IF you have to add nitrogen to your tadd phosphate The nitrogen and phosphate fertilizers probleably have instructions to achieve a specific level of each in the water.

 

[Colin_T]

Aquatic plants normally get their nitrogen and phosphorus from the fish food and waste in the water. Nitrogen and phosphorus are also harmful to fish & other aquatic organisms (shrimp, snails, etc) and encourage algal blooms, which is why they are not normally adding to aquarium plant fertilisers.