I've tried to figure out a problem with surface film for some time, both by searching forums and trial and error. But nothing seems to solve it.
I redid my tank 2 weeks ago and cleaned everything out, replaced substrate etc but used my mature filter, plus some old plants and sand (the tank didn't need to go through cycling). I've also swapped to a different type of Fertilizer.
Now my old problem with surface film has come back to haunt me. I did a water change yesterday, removed any film and already this morning it's back and not a little bit either.
It's the same type of film as I've always had a problem with, definitly not algae. Just a silvery heavy film that breaks easily if you touch it.
In the past I've tried increasing the surface agitation but it doesn't really help much. It requires a very large amount of surface movement to make any difference.. for example raising the lilypipe half way up above the surface but it makes a lot of noise and requires me to inject a insane amount of CO2.
Any ideas at all where I'm going wrong?
Tank Volume: 50g
CO2: Drop checker is Lime Green (CO2 UP Aqua Atomiser)
Temperature: 26c / 79f
Light: 38PAR (3x GroBeam 1000 ND LED's at 33% power)
Filter: Eheim Pro3 600T (475 gph)
Substrate: ADA Amazonia (new)
Fertilizers by Aqua Rebell:
6ml / day Makro Basic NPK
3ml / day Micro Spezial Flowgrow
1 x Echinodorus Osiris
2 x Echinodorus Compact
5-7 Different type of smaller Crypts
6 x Blyxa Japonica
3 x Cory's
4 x Oto's
2 x Blue Rams
8 x Dwarf Chain Loaches
10 x Cherry Shrimps
8 x Neon Green Rasporas