Backyard Aquaponics
A place to discuss aquaponics

I am have issues with my cucumbers ph 6.8, ammiona .25, nitrite 0, nitrate 40. Ihave be fishless cycleing for over a month and am going to get fish in app 2 weeks, I have been adding TB of urea, 3 caps of seasol and 3 caps of seasol powerfeed every 2 days, the system is cycled. when this started i though it was a fungis issue and sprayed the plants with eco rose then thinking it was a lack of potassium I added 3 TB of eco rose to rise the potassium level and phthat was 2 weeks ago and it still does not seem to fix it, any ideas that can help the pak choi and corn look great if that helps.
River Rat

Looks a bit like downy mildew to me. Use a 50-50 mix milk and water, and spray both sides of leaf. Weekly. Also remove all affected leaves and dispose of in rubbish or compost (if it gets hot). Also there is a BiCarb, soap, and oil mix that will do the job. Teaspoon fo BiCarb, 1 liter water, drop of kitchen washing up detergent, drop of olive oil. Apply weekly as above. Hope this helps, albeit a bit late it may seem. Cheers, Greg.