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View Full Version : what do you think about this diy algae turf scrubber ?


slirp87
08-01-2019, 12:34 PM
what do you think about it? any suggestions?
it uses two of this 2w led light white 6500k (i suppose) 24h/7 days: https://it.aliexpress.com/item/32890769532.html
the canvas is 18cm x 10cm and i feed 1/2 cube mysis shrimp per day.
water pump: 400l/h
my tank has 100 liters capacity.
it is in function from yesterday.
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SantaMonica
08-02-2019, 10:43 AM
Welcome from Italy.

Do you have 1 or 2 drains? If one drain clogs, the second drain (higher up) will then be used.
slirp87
08-02-2019, 11:04 AM
Welcome from Italy.

Do you have 1 or 2 drains? If one drain clogs, the second drain (higher up) will then be used.

Thanks! I have 3 drains , i was scared of clogging haha
I hope that two led strips of 2w per side at a distanze of 3cm from the canvas Could be sufficient
SantaMonica
08-02-2019, 12:37 PM
Those LED strips are probably 1 watt of light, and 1 watt of power supply. So they are lower power than you need but since you have them installed just use them and see what happens. You will probably get some growth in the middle of the screen.
slirp87
08-03-2019, 08:42 AM
Those LED strips are probably 1 watt of light, and 1 watt of power supply. So they are lower power than you need but since you have them installed just use them and see what happens. You will probably get some growth in the middle of the screen.

actually, i think they are 2,4w each one --> 480ma , 5v = 2,4w , each one powered with 5v 1A power supply.
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slirp87
08-04-2019, 01:25 AM
little update
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SantaMonica
08-04-2019, 08:47 PM
Yes but half the wattage will go to heating up the power supply, which is why it gets warm.
slirp87
08-07-2019, 08:41 AM
you are right ! so every time we read a declared wattage , the real one is an half of that ?
update:
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SantaMonica
08-07-2019, 10:40 AM
Yes for the small lights the wasted heat is about 50 percent. For larger lights the wasted heat is about 20 percent.
slirp87
08-11-2019, 02:38 AM
day 11 - time to clean the mesh ? - phospathes 0,03 - nitrates 20 7902
SantaMonica
08-11-2019, 02:36 PM
Yes a light brushing is good.
slirp87
08-31-2019, 09:34 AM
little update: i changed the design, no more transparent tubes because algae grow inside and clogg it. I've also updated lights and canvas, now i have a total of 6w, red and blue led lights.
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SantaMonica
08-31-2019, 10:04 AM
Yes clear does that, and even white will do it some.
slirp87
09-15-2019, 08:26 AM
changed light at day 7 , now i have a total of 10w red and blue , here is a picture at 15 days. There is a little hair algae type and a paler patch in the middle where the lights are stronger, is it normal ? i'm running 18h on and 6h off lights .
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SantaMonica
09-15-2019, 02:22 PM
Yes is looking good now.