F2 fertilizer in the aquarium?

[Garf]

3 weeks now of adding f2 fert. Added 2 mls so far, which is about a couple of Litres equivalent of live
Phyto in a 200ltr system.
Nutrient tests results have not increased. Snails seem to be turbocharged with lots more activity. No negative effects noted.

Edit - maybe 4 Ltrs of live phyto, it’s been a long time since I bothered growing some :)