Is this a high fish load?

[hani]

hi, i have noticed some decline in plants growth recently, the only thing different is the fish load, i have a 75 gallon tank, co2, EI, 2X39 T5, 2X2217 FILTERS:
20 rummynose
30 Harlequin Rasbora
15 cardinal
4 SAE
4 OTO
these fish were added gradually
is this a high fish load?
thanks

 

[Gerryd]

Hi hani,

I would think you are okay as the # of fish.

I don't think it is the cause of poor plant growth.

I would say that over time perhaps the balance of c02, nutes, lights, and bio-mass got wacked.

You need to increase c02 and ferts as bio-mass increases. Have you done this?

 

[hani]

yes, i did increase co2, fert, the only thing makes me think its a fish load is the surface scum witch i never had before despite good surface agitation, filtration.
any thoughts?
hani

 

[Ekrindul]

Certain foods seem to increase surface scum more than others. Bloodworms cause it in my tanks.

 

[Tug]

Higher O2 levels help oxidize surface film. With a heavy fish load, organics could overload a biological filter. Add a little H2O2, maybe. Not that any of this would mater to plants. Well, maybe too much hydrogen peroxide.