Backyard Aquaponics
A place to discuss aquaponics

Are you refering to the calculator I am using or "calc's" in general? When you say 100 gallons and 25 lbs are you talking about hydroton still? Is it correct it would be more i media needed if it was gravel (less surface area)

So far 3 ratio's have been listed
40 lbs and 20 cubic feet (149 gallons = 375 lbs)
25 lb => 100 gallons (250 lbs gravel)
3 kg (6.6 lbs) => 100 kg (220 lbs or 88 gallons)

The first 2 are virtually the same and way beyond the third

Something didn't seem right to me, the expression of weight of fish per weight of growbed - it really should be weight of fish per volume of growbed.



3kg should be considered the maximum not the average.

Here's the thread that I got this from, EB outlines what they recommend for their systems further down the page in the same thread - http://www.backyardaquaponics.com/forum/viewtopic.php?f=12&t=6646

Hope this helps.

bioguy. Whats up with your system??? is it working? or did you run into any problems?

I think coco coir "suck ups" nutrients way faster/further than it wicks water, That's why it works so well, once you don't rely on it as a means of the actual conversion processes. It would be interesting to get a update of your progress. As i think it would work quite well. I am doing something very similar.
Warning overly exaggerated numbers to emphasize a point (Why wicking coco is a good idea):

1)Water would be wicked 8 inches up the pot to reach the roots in 1 hour
2)The nutrients in the water reach the plant roots in 5 mins

So as water is passing through the bottom 2 inches of pot, it is getting cleaned at the same rate as if it were going through a whole grow bed of hydroton.