Tetra Crpyto, Root fertiliser tablets for lush, healthy aqu

[wynx]

Hi all

I got a pack of the following root tabs for my planted tank. I am not sure whether Tetra is telling the truth or not. But this product does not contain and N or P at all.

Anyhow, can share your experience with me? I am just trying one tab for my C.Aponogenton and another amongst my C.Wenditt. So far, nitrate still measures between 0 -12.5ppm

Anyhow, I cut and paste information from Tetra for all to read []

Root fertiliser tablets for lush, healthy aquatic plants.
· the plants absorb the nutrients through their roots
· containing iron and all important trace elements in a complex bound form
· the fertiliser substances are therefore available to the plants for a long time
· the tablets are adapted to the special requirements of the aquarium substrate, thereby supporting the work of the important substrate organisms
· free of nitrate and phosphates; therefore no contamination of the water
· prevents unnecessary growth of algae

[vinz]

Ummm... why would Tetra want to lie? In the worse case, ppl can have an independent lab test their products and then get them in trouble for false advertising/misrepresentation.

NO3 in a tank comes indirectly from fish waste, leftover food, decomposing organics etc. Most aquatic fertilisers contain zero or very little N in any form.

Recommended levels for NO3 and PO4 are 5 to 10ppm and 0.5 to 1ppm respectively.

And one more thing... be careful what/how you write about companies or individuals in the forum. They could come after you and this forum's members, mods and admins for defamation, etc.