Hi everyone,

I put together a small Barrelponic system after downloading a manual from Travis Hughey. It is a great introductory system for those who want to get acquainted first with Aquaponics before sinking a bunch of money into a large system.

I posted two videos already on Youtube which you can see at http://www.youtube.com/watch?v=8Hzj1qm1m5Y.

It is entering into the forth week and should be stable by the fifth week.

I have encounter some problems and thought maybe you could help.

One we do not have the luxury of a complete nursery here in Palawan Philippines. there is no where to buy Chealated Iron or other supplements to the system. However someone did suggest to place small amounts of rusty nails and tin cans int he flush tank to carry iron sulfates into the growing bed. The other problem is the lack of Potassium. does anyone know a natural way to replace the potassium in the plants without killing the fish?