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After reading your guide a I am planning to built one as well.Haha, I think you'll get a whole lot of different views on that. Here's mine …… I personally have found that the accepted guidelines are a bit too low, in other words I need more surface area per cube equivalent that the recommendation. I feed about 12 cube equivalents daily and the current screen is 480 square inches (counting both sides) with all screen area growing algae; so that's 40 square inches per cube. Another way to 'size' is to use 1 square inch double lit per gallon of water.
Which measure the sheet would it be the best for a 400 lt tank?Yes the split-sheet has been working well for many years now, so keep doing that if it's easy for you.
Scrubbers are sized according to feeding. Nutrients "in" (feeding) must equal nutrients "out" (scrubber growth), no matter how many gallons or liters you have. So...
An example VERTICAL upflow or waterfall 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 florescent watts (not equivalent watts) of light, or half that for LEDs, for 18 hours a day. If all 12 watts (6 watts LED) are on one side, it is a 1-sided screen. If the watts are divided on each side of the screen, it is a 2-sided screen. This 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)
Problem rocks: Each 50 pounds (2.2 kg) of nuisance algae covered rocks you have adds 1 cube a day.
Flow or air bubbles is always 24 hours; water flow is at least 35 gph per inch of width of screen [60 lph per cm], EVEN IF one sided or horizontal.
FLOATING SURFACE SCRUBBERS WITH STRINGS: Screen size is the size of the box (Length X Width), and is 2-sided because the strings grow in 3D.
Clean algae:
Every 7 to 14 days, or
When it's black, or
When it fills up, or
When algae lets go, or
When nutrients start to rise
LOL. So you're suggest a 500g tank with one fish should use the same size scrubber as a 500g tank with 30 fish?That is false to size them by feeding. The same nutrients into a 65g do not equal the same nutrients into a 180g. Dilution drastically throws off your “feeding” equation. Especially when nitrates and phosphates are measured in ppm and that is the same way that algae consumes them. Also, most coral foods seem to break down much faster than any fish food. So while that was a good start, they need to be sized by aquarium size.
LOL. So you're suggest a 500g tank with one fish should use the same size scrubber as a 500g tank with 30 fish?
LOL, again
What are you LOL’ing about? Please provide some data to back up your claims.
Nutrients in don’t equal nutrients out... do you expel the same amount of waste that you take in? Neither do fish! They use most of that as energy for life. Just like you or I. Also, please show me where one cube of food in a 65g equates to the same ppm of nutrients in a 500g as your example states.
While it does help to size on smaller tanks, what Santa Monica only builds for. It DOESN’T work for larger systems. just because it’s been out on the internet for a few years, doesn’t mean it’s the Bible when it comes to sizing the correct scrubber.
Is it loud? Splashing?
That is compact. Makes the top pipe look huge.
There was an article about screen size. You don’t need a very big screen especially if you use both sides.
Do you know which article that was? Could you reference it by chance?