33x26cm algae scrubber using 10w LED flood

[SantaMonica]

Half the watts of recommended CFL.

[mrorange26]

Sorry to keep asking but for my screen size how many watts cfl do i need.Screen size 9inches by 7inches

[SantaMonica]

Scrubbers are now sized according to feeding. Nutrients "in" (feeding) must equal nutrients "out" (scrubber growth), no matter how many gallons you have. So...

An example screen size is 3 X 4 inches = 12 square inches of screen (7.5 X 10 cm = 75 sq cm) with a total of 12 real watts (not equivalent) of fluorescent light for 18 hours a day. If all 12 watts are on one side, it is a 1-sided screen. If 6 watts are on each side, it is a 2-sided screen, but the total is still 12 watts for 18 hours a day. This screen size and wattage should be able to handle the following amounts of daily feeding:

1 frozen cube per day (2-sided screen), or
1/2 frozen cube per day (1-sided screen), or
10 pinches of flake food per day (2-sided screen), or
5 pinches of flake food per day (1-sided screen), or
10 square inches (60 sq cm) of nori per day (2-sided screen), or
5 square inches (30 sq cm) of nori per day (1-sided screen), or
0.1 dry ounce (2.8 grams) of pellet food per day (2-sided screen), or
0.05 dry ounce (1.4 grams) of pellet food per day (1-sided screen)

High-wattage technique: Double the wattage, and cut the hours in half (to 9 per day). This will get brown screens to grow green much faster. Thus the example above would be 12 watts on each side, for a total of 24 watts, but for only 9 hours per day. If growth starts to turn YELLOW, then increase the flow, or add iron, or reduce the number of hours. And since the bulbs are operating for 9 hours instead of 18, they will last 6 months instead of 3 months.

[mrorange26]

IM abut confused, so for the size if my screen how much cfl light would I need 2 sided

[kerry]

You need 31.5 watts per side of CFL or about 15.75 watts of LED.

[mrorange26]

What do you think to these http://item.mobileweb.ebay.co.uk/vie...id=37379801708

[mrorange26]

What do you think to this led lamp for the scrubber
http://www.ebay.co.uk/itm/190519997878

[Floyd R Turbo]

Maybe. Those are very low power LEDs. Look how many there are for 6.5W of power. So far though, 3W LEDs on star boards way out perform an LED floodlight I have seen.

[mrorange26]

What about these
http://www.ebay.co.uk/itm/2006226310...84.m1423.l2649

[rleahaines]

I tried the low powered 14 W led array... didn't work.

the array of less than 1 Watt LED's won't work.. just gives you spread out lighting.

kind of like lighting 100 tiny candles and putting them around a room vs. having a 100 watt bulb in a lamp you use for reading.