white fungus/mold on substrate

[zack]

hi all. new to online aquaria. ive a 65 gallon going for over 3 months. i planted a nice plant in its black plastic planter complete with its foam padding (no soil ) in the left rear corner of my tank over a month ago. there is a pretty powerful airstone about midway up the plant suctioned to the glass so the circulation is strong there.
i took off the side panel (i use it to keep out too much light) and noticed all over the gravel and the two glass panels a blanket of white fungus type stuff. first glance looked like litle white worms of a sort but careful observation showed it no such creature...i think!
ive had a few fish die recently of some sort of internal hemmoragging(sp?) and wonder if this could be the cause. ive been treating the tank now with melafix for the last 2 days before i noticed this.
could the way i plugged in the plant be the cause?
does the circulation cause it?
all of the fish seem to be doing just fine.
i plan to do a water change vacuuming the area very well with the siphon, unpot the plant and replug it naturally. i use seachem flourite in the tank for the plant growth.
should i finsih out the melafix b4 i do this or are there any better ideas??
thanx
zack

[Thunderkiss]

Rockwool is inert (if thats what yours are in, which is what plants are usually potted in) so unless there was something living in there i doubt it. First i'd go to where i got the plant and ask if theyve had similar problems.
Little white wormy thing on glass usually spell planaria, which is a type of "sewer worm", usually only encoutered in aquaria when water changes are lax and pollutants allowed to accumulate. Laterite/flourite is rich soil tho, so it MAY be that, altho i'd certainly not take that as gospel and do a bit more detective work first.

Tank parameters?

[zack]

thanx. i am quite sure it is not a worm of sorts.just the shape of the mold or whatever the heck it is.
its a high-current tank. i forgot to mention that i also have a hot magnum 250 which flushes the tank very efficiently.