A 2 YR. STUDY OF ALGAL GROWTH WITH F40F12 LIGHTS

[robertprice]

I HAVE RUN 4 COMMONLY USED 55 GALLON FLUORESCENT TUBES 12 HOURS DAILY FOR 2 YEARS IN SIMILAR TANKS. THESE ARE THE RESULTS FOR ALGAL GROWTH.

1. PETLAND STANDARD 55 GALLON FLOURESCENT- ACCEPTABLE GREEN ALGAE GROWTH IF NOT EXPOSED TO SUNLIGHT, OTHERWISE ALGAL GROWTH MODERATE TO SEVERE.
2. PHILLIPS 40 WATT NATURAL SUNLSHINE- AS ABOVE.
3. OTT LITE VISION SAVER 4 FOOT FLOUPRESECENT - NO ALGAL GROWTH AT ALL.
4. PHILLIPS PLANT AND AQUARIUM- EXTREME ALGAL GROWTH UNDER NORMAL CONDITIONS, UNACCEPTABLE WHEN EXPOSED TO NATURAL SUN.

ROBERT PRICE

[xoomer]

I'd be interested to see pictures of your setup and some more info on testing methology.

[bluedog800]

would it not be fair to assume that the different lights causing algae growth would have different affects on plant life. This doesn't seem to address depth of penetration either. I would defiantly require more information before i accepted the blanket 4 line statement.

[xoomer]

I have to agree with you.