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Ryan
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heavy feeders / light feeders, setup

Started this discussion. Last reply by Carey Ma Apr 22, 2012. 12 Replies

So... I'm new to aquaponics but have quite a bit of experience in hydroponics. However, the question I have is something I havent found in my reading. I umderstand the general rule of stock density…Continue

Tags: tilapia, basil, lettuce, peppers, feeders

 

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Carey Ma replied to Ryan's discussion heavy feeders / light feeders, setup
"In  my process, I stock and grow much like everyone else. The main difference is that I "drain" half my tank every two weeks to another aerated grow bed in a succession of six beds. Each bed grows a different trophic level…"
Apr 22, 2012
TCLynx replied to Ryan's discussion heavy feeders / light feeders, setup
"Yea, like when the tomatoes are going great guns and the fish load is maxed out but nutrients are low, it's probably too hot to plant lettuce in the rafts anyway so just leave some rafts empty.  When it gets cold and the tomatoes get…"
Apr 22, 2012
RupertofOZ replied to Ryan's discussion heavy feeders / light feeders, setup
"And yep, if you have the (max) level of filtration built in... then you certainly can adjust stock levels to number/type of plants...."
Apr 22, 2012
TCLynx replied to Ryan's discussion heavy feeders / light feeders, setup
"Yea Ryan, you will just have to kind of trial and error to figure out the right balance.  Keep in mind that the balance will vary significantly by season, temperature, fish type, fish feed (protein %) and stage of plant growth.  I think…"
Apr 22, 2012
Ryan replied to Ryan's discussion heavy feeders / light feeders, setup
"thank u tc. That makes sense, its most likely just going to level off the nutrient level. Not really an assembly line but at least the heavy feeders have the first stab at the nutrients everytime the water leaves the fish tank. But yea, I told…"
Apr 22, 2012
Ryan replied to Ryan's discussion heavy feeders / light feeders, setup
"Not mortification, lol. Nitrification. :)"
Apr 22, 2012
Ryan replied to Ryan's discussion heavy feeders / light feeders, setup
"Hey Rupert, I understand the relationships a little better than u think but I don't think I gave enough information. Grow beds (I.e. - bio-filtration ratio of 1:1. Meaning 1 cu ft of grow bed per pound of grown out fish. I was just more curious…"
Apr 22, 2012
TCLynx replied to Ryan's discussion heavy feeders / light feeders, setup
"Ryan,      I was only commenting on what you posted.  So are you saying this isn't what you meant to write? It looked like you were saying 5 gallons for 10 lb of grown out fish???????  That is what worried…"
Apr 22, 2012
RupertofOZ replied to Ryan's discussion heavy feeders / light feeders, setup
"  Ryan, you're misunderstanding the relationships with regard to stocking density...   Stocking density is in the end totally related to your filtration capacity... (and oxygen provision)   More fish will certainly result in…"
Apr 21, 2012
Ryan replied to Ryan's discussion heavy feeders / light feeders, setup
"I think u misunderstood. My understanding is that its often recommended to stock one pound of grown out fish per 5-10gal of water. However, its more common to see a pound to 5-7 gal of water. The second part I think u missed is the media beds will…"
Apr 21, 2012
TCLynx replied to Ryan's discussion heavy feeders / light feeders, setup
"Ryan,     You need enough bio-filtration for the fish load.  I'm not sure where you got 5 gal-10 lb of fish?  5 gallons of what? Your numbers actually sound a bit backwards to me.  I often do like 1-3 (depending on…"
Apr 20, 2012
Ryan and TCLynx are now friends
Apr 17, 2012
Glenn replied to Ryan's discussion heavy feeders / light feeders, setup
"A study reported in the Journal of Plant Nutrition    Volume 16,  Issue 3,  1993 suggests that each kilogram increase in fish biomass can provide sufficient nutrient uptake for two tomato…"
Apr 15, 2012
Ryan posted a discussion

heavy feeders / light feeders, setup

So... I'm new to aquaponics but have quite a bit of experience in hydroponics. However, the question I have is something I havent found in my reading. I umderstand the general rule of stock density roughly being 5 gal - 10 per lb of grown out fish but that generally applies to growing traditional aquaponic crops, which are primarily light feeders. What if i had a media bed that ran tomatoes and peppers (heavy feeders), which would serve as biofiltration and could allow a much higher density of…See More
Apr 14, 2012
Ryan is now a member of Aquaponic Gardening
Apr 14, 2012

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At 10:55pm on April 14, 2012, Sylvia Bernstein said…

Welcome Ryan,

Thanks for joining the Aquaponic Gardening community!  I hope you find it a fun place to explore aquaponics.  There is a real blend of experienced and new aquapons in this community, so please don’t hesitate to get in there and start asking questions.  Everyone is quite happy to help out new members – no question is too basic.

A great place to start is to read the “How to Use This Site” link on the upper right corner, “Start Here” section of the Home page.  You might also find the “Aquaponic Gardening Rules of Thumb” guidelines helpful.

Please add a profile image, participate and check in with us every day!  We are constantly posting news about aquaponics and the good food movement.

Thanks again for joining us, and I look forward to getting to know you.

Sylvia

 
 
 

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