Do I need to buy ammonia?

[Gillian Burrus]

I have been cycling since October, i know right before cold weather, but i do not want to get fish until i get this science part down.  I bought maxi crop so I could begin growing veggies.  Well my stale and beets started strong and my son got on the GB and messed with the spinach.  Any ways, i am pretty sure this past week killed my kale (my tank froze). BUt I do not have ammonia present, and my ph is still quite high. 7.6or higher.  When is it safe to get fish?  Ought I start adding ammonia?

[Alex Veidel]

If you've got plants in there, you need to feed them something. Start adding your ammonia.

http://theaquaponicsource.com/2012/05/15/aquaponics-fishless-cyclin...