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I know that this is yesterday's technology, but I have two F32T8 6500K fluoroscent tube bulbs over my 75 gallon tank. I have each tube overdriven using a 4 tube ballast to power one bulb.
I have one of Hoppy's PAR meters and at the substrate level I get between 60-100 PAR.
The bulbs cost about $3.00 each, the ballast cost $12 each and the fixtures were found on craigslist for about 5 bucks. Total: $40
Not the most advanced tech, not as energy efficient as LED, but very inexpensive to build and maintain!
Ben
I have one of Hoppy's PAR meters and at the substrate level I get between 60-100 PAR.
The bulbs cost about $3.00 each, the ballast cost $12 each and the fixtures were found on craigslist for about 5 bucks. Total: $40
Not the most advanced tech, not as energy efficient as LED, but very inexpensive to build and maintain!
Ben