lighting/co2/vs algae

[gsander]

I have a 90 gal tank that I plan on redoing after a major algae breakout and believe my problem is to much light with not enough CO2. Currently have 3 110 vho bulbs on tank. tank is 24" tall. Plan on removing one bulb and just having two. Will this be better. Thought about switching to pc, but I already have the ballast etc for the vho's. I will purchase a pressurized CO2 system with in the next few weeks. I think with adding more CO2 and lowering the light level this will deplete the unwanted algae.

[tawauboy]

330w for a 90 gallon tank can be considered as a high light tank. you'll need to keep up the co2 and nutrients else you'll have algae problems.
as a start, dropping the light level and increasing co2 would help. aim for 30ppm of co2 during the photoperiod.

[gsander]

thanks for the comments I appreciate it.

[taz_boy]

just to check out,

if my tank is around 2WPG, meaning 2x36w for my 36GAL 3 ft tank,
roughly how high ppm should i maintain my CO2 level....
cos i also spot so algae at my tank glass recently.....

lighting hours= 8hr/day

[Goondoo]

just to check out,

if my tank is around 2WPG, meaning 2x36w for my 36GAL 3 ft tank,
roughly how high ppm should i maintain my CO2 level....
cos i also spot so algae at my tank glass recently.....

lighting hours= 8hr/day

I would recommend 30ppm for all tank size 2 feet and above(for high tech tank). I think you should consider increasing your lighting hours to 9 or 10. As many had stated, spot algaes are normally due to insufficient PO4.