[devistiger]

santa monica, il https://public.sheet.zoho.com/public...lculator-xls-1 non funziona, puoi caricarlo in altro server???

[SantaMonicaHelp]

Sì, il collegamento appare spezzato. Chiederò alla persona che lo ha fatto.

[devistiger]

OK....thanks

[SantaMonicaHelp]

Anche in questo caso, mi spiace per l'inglese...


Advanced Aquarist Feature Article for December 2013: Coral Feeding: An Overview
http://www.advancedaquarist.com/2013/12/aafeature


The picture in the article shows that in the 1000 litre test tank:

98% of the food particles go to the skimmer when there are 2 coral colonies
71% of the food particles go to the skimmer when there are 40 coral colonies
92% of the food particles go to the skimmer when there are 2 coral colonies, when skimming is cut in half
55% of the food particles go to the skimmer when there are 40 coral colonies, when skimming is cut in half


"This trade-off between food availability and water quality can be circumvented by using plankton-saving filtration systems, which include [...] algal turf scrubbers"

"Corals are able to feed on a wide range of particulate organic matter, which includes live organisms and their residues and excrements (detritus)."

"...bacteria [...] can be a major source of nitrogen."

"...when dry fish feeds or phytoplankton cultures are added to an aquarium, a part of this quickly ends up in the collection cup of the skimmer.

"...mechanical filters (which can include biofilters and sand filters) result in a significant waste of food."

"Detritus is a collective term for organic particles that arise from faeces, leftover food and decaying organisms. Detrital matter is common on coral reefs and in the aquarium, and slowly settles on the bottom as sediment. This sediment contains bacteria, protozoa, microscopic invertebrates, microalgae and organic material. These sedimentary sources can all serve as coral nutrients when suspended, especially for species growing in turbid waters. Experiments have revealed that many scleractinian corals can ingest and assimilate detritus which is trapped in coral mucus. Although stony corals may ingest detritus when it is available, several gorgonians have been found to primarily feed on suspended detritus."

"Dissolved organic matter (DOM) is an important food source for many corals. [...] scleractinian corals take up dissolved glucose from the water. More ecologically relevant, corals can also absorb amino acids and urea from the seawater"

[Gennariello]

Santamonica, I am writing in English for you.
I am planning to build a filter using one of the two overflow connecting the tank to the sump. I will have quite a big waterflow, the tow of them support more than 1200lt/h.
I will use a very simple design. I will use an horizontal pipe with the cut in the middle end the net located in the cut as usually. As my sump has a very high side glasses, I will use that to protect the lights. Out of the sump I will locate some impermeable strips (it is not really needed, but safety first). I will use red led-stripes.
With this design I can have light only on one side of the net, I know is not the best... :(
How large should the net be?
How many Watts?

My tank is about 300l and has many problems of phosfate and nitrate. I think I am not overfeeding but maybe I do!

[SantaMonicaHelp]

With 1200 lph total (600 lph each overflow), you can make the screen 12 cm wide. It will be about 20 cm high, to touch the water below.

It can use 10 to 20 watts red LED on one side.

[Gennariello]

Originariamente inviata da SantaMonicaHelp

With 1200 lph total (600 lph each overflow), you can make the screen 12 cm wide. It will be about 20 cm high, to touch the water below. It can use 10 to 20 watts red LED on one side.

Thanks, I am going to try that and I will let you know about the results!

[SantaMonicaHelp]

Grande video che mostra come a DIY un ATS base...
http://www.youtube.com/watch?v=qGLnBvDkaO0

[devistiger]

Santamonica, le dimensioni per ATS uas come devo calcolare??

[SantaMonicaHelp]

Quote:

Santamonica, le dimensioni per ATS uas come devo calcolare??

Mi dispiace molto, non ho visto questo. Ecco raccomandazione, in inglese:

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