Fertiliser

Following on from something in Jesnon's cycling thread, I need a bit of help on the subject of fertilisers.

Jesnon was asking about how to feed non-rooted plants like java fern and moss balls. I am in the same situation, I have java fern, anubias, hornwort that is weighted down by an ornament rather than planted, Salvinia and now duckweed.

On the recommendation of a shop (yes, I know...........) I bought Seachem Flourish. I have just looked at the bottle to see how much it cost (Jesnon asked about prices) and realised for the first time that Flourish just doses micro elements. I didn't read the label properly when I first got it, I saw the words micro elements and macro elements and completely missed the fact that it says you have to use other products for the macro elements. On closer reading it says that N P and K are in their own bottles so that means three extra bottles of fertiliser.

What should I be feeding to a tank that has non-rooted plants. Obviously root tabs won't work (no roots) so it has to be dosed into the water column.
The tank is lightly planted and very low tech (T8 bulbs, no CO₂)
Since I already have micro elements in the Flourish, is there something that contains just NPK and no trace elements? Preferably in one bottle rather than N in one, P in another and K in a third like Seachem, which sounds quite expensive! Or would the fish provide enough macro elements for a lightly planted tank?



Help!!!!

Thanks for the reassurance Steve. I do actually have a bottle of Flourish Excel but have been apprehensive of using it after reading it can cause problems with shrimps (I have amanos in my 125 litre) and I've had problems with the hornwort in the 50 litre when using it. I suppose the answer it to use it but at a smaller dose than it recommends?

Thanks, I'll try that.