Dirted the 75G: Now on to lighting 11600 - 12200 lumens enought until I can get my T5HO's
4x 40w T12 -12200 lumens @160w or 4x 32w T8 6500K 11600 lumens 128w
Thinking of replacing bulbs .I was gave a working shop light today kinda wanna replace bulbs in it, but get best bang for my buck .I was told T8's lose less energy over time vs T12 after so many hrs
Thoughts opinons please based off of facts
Tank: standard 75G
2in dirt ,capped 1in of sand
Java moss
Anachris/elodea
Water sprite
Jungle val
Marimo Balls
Cypt wendtii green
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Permalink Reply by Robert Jango on
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The four t-12s use 32 watts more p/hr. That comes to about 2 one-hundredths of a penny p/hr more at the standard seven 7 1/2 cents per kilowatt. (cheaper in Canada.) So your losing a penny every 50 hours. That's about a penny every 4 to 7 days depending on how long the lights stay on. But, on the other hand, you're getting more lumens.
In conclusion your saving about 75 cents per year with the T-8s but getting a little less light.
You need about 20 lumens p/sq inch surface area; so you're ok there.
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