Backyard Aquaponics
A place to discuss aquaponics

Wouldnt there be a limit to how much the flow could be slowed without the siphon failing? I dont know if it could be slowed enough to make a difference to ammonia uptake / nitrogen supply.

Hmmm that seems sound logic...

Anybody have any other ideas on how to change the nitrate levels plants are getting?

If it is not desirable to starve the fish, and slowing the rate is also not practical, the only thing else I can think of is growing other nitrate-sucker plants.

This needs some empty space in the GB or another spare GB.

When you want the radishes/whatever to stop growing leaves alone, just plant lots of nitrate suckers. Remove them after the radishes have become large enough.

Even this does not seem too practical...

Need potasium , MORINGA has 3 times as much as bananas , need protein for the fish MORINGA has twice the protein of milk , need Vitam C ,,,AHHHHHHHHHHHHHHHHHHHHH

Ok here is the link , I keep saying and no one listening ( poor me ) .

http://www.enviro.org.au/article_moringaTree.asp

Oh great, I've heard you say this a kazillion times, it makes me even more happy my mom planted a moringa tree in the front of our house.

We eat the leaves and the drumstick too.
The leaves taste like iron, like licking an iron railing... ok it does taste good. (moringa is most known for its iron)

Chappo, we believe you (or at least I do). I googled it, and what I found supports your contention of the wonder-tree. THe biggest drawback I see with it is that it seems to be restricted to tropical latitudes.

It does grow almost like a weed though!

I have the impression that one could overwinter cuttings of the Moringa tree inside as houseplants. They grow fast and I understand are easier to harvest if kept as shrubs anyway. In semi or sub tropical climates, they might die back to the ground in winter if not provided with some extra protection but it sounds like they will grow back from the ground quite quickly.

Just remember that if you are trying to grow Moringa cuttings or small trees in your AP system, that you will need to provide the system with the Iron and Potassium the tree needs in order for it to be high in those nutrients as a crop. Grown in the ground, it probably mines for potassium with it's roots the way comfrey and other useful plants do.

That'd be good if it works Care to test?