You are right in the sense that UGF's generally break down the tab and
distribute it thru the water column.... is that too rich for fish, no... It
can lead to some algae IF, the water is already rich with ferts.... but
generally, it's ok, and needed for heavy root feeders like amazon swords...

suggestion that I'm working on, is to take a clay pot, put some gravel and a
tab into it and plant the sword in the pot, easy to move, fert and looked
ok...


"Zion Hill" wrote in message
...
Hi,

Can you use Planttabs tablets or Flourish Tabs with an under-gravel setup?
Would it make the whole water environment too rich for the fish due to the
circulation?

Thanks