Aquaponic Gardening

A Community and Forum For Aquaponic Gardeners

James Rubasch
  • Aiea, HI
  • United States
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Winter Spawning in Hawaii

Started Feb 28, 2023 0 Replies

Hey folks - growing red, black, golden and mottled (koilapia) tilapia here.  They love warm water!Water temperature in tanks can reach lows around 70f in the early mornings here in winter.  I would…Continue

Tags: Spawning

Drowning slugs by flooding growbeds?

Started this discussion. Last reply by George Nov 23, 2015. 2 Replies

Hello Aquaponic Community,I have waged war on the slugs in my growbeds.  I read recently that I should flood the growbed for 15 minutes or so.  Will that kill my worms?Picking the slugs one-by-one is…Continue

Tags: worms, slugs

Stunted Growth in Roma Tomatoes

Started this discussion. Last reply by Alex Veidel Jan 8, 2014. 1 Reply

Hi All,My Roma tomatoes are stunted and only about 1.7-2" long.  Good flavor and texture.  My nitrate levels are medium to high, ammonia zero, aeration good, and fish balance is about right for my…Continue

Chelated Iron byproducts

Started this discussion. Last reply by Scott Roberts Nov 17, 2013. 1 Reply

Could use a little help here....I plan to supplement chelated iron in my aquaponics as recommended by a commercial farm in my area.  It is supposed to help the lettuce plants.  My plan is Sequestar…Continue

Tags: supplements, defficiency, iron


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James Rubasch posted a discussion

Winter Spawning in Hawaii

Hey folks - growing red, black, golden and mottled (koilapia) tilapia here.  They love warm water!Water temperature in tanks can reach lows around 70f in the early mornings here in winter.  I would like to encourage spawning in my quarantined fish (3 females/ 1 male).  Should I be putting a heater on that tank?  They just want to go dormant this time of year.  I want them to think it is time to spawn year round!Anyone know mean daily temperature for optimal breeding?  I was thinking at least…See More
Feb 28, 2023
James Rubasch replied to Phil Treaster's discussion media or raft? in the group Aquaponics in Paradise
"This is a good thread with excellent points made by experienced and new growers.  Best to use grow media beds followed in series by a flow bed.  Each has its strengths as pointed out below."
Sep 16, 2022
James Rubasch joined AlbertF's group

Aquaponics in Paradise

Are you in Hawaii?  Join this group!
Jun 6, 2019
James Rubasch joined Giorgio's group
Jun 6, 2019

Profile Information

How did you find us?
Search engine (Google)
If you found us through a search engine, what search words were you using?
timed flowbeds
Are you an aquaponic gardener already?
If so, what type of system? (pick all that apply)
flood and drain media, raft
How old is your system?
Just started
What type of fish do you grow with? (select all that apply)
How big is your fish tank?
180 and 110 sump
Please tell us something else about yourself.
My system is in the planning phase.

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At 2:15pm on April 13, 2012, Sylvia Bernstein said…

Welcome James!


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.





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