Water changes and anticipation

Observations

• Fish have a voracious appetite. I continue to feed them twice per day. I hasn't appeared to effect the water readings, which are dropping in the nitrite and ammonia categories.
• Tank water still has greenish tint. I still need to address the algae in the tank. At least for the interim, I've been covering the glass when we're not in the room; at least during the day, to minimize its growth.
• Growth progress; particularly among the chives. The lemongrass also appears to be sprouting in the corners where I placed it.
• The ammonia is keeping steady at 0.25 ppm while the nitrites have dropped to zero. I'm asking myself whether I should add another fish to keep the plants fed with nitrates. I may do this if the nitrates drop along with the nitrites. My other questions are:
• What is a reasonable level of nitrites and nitrates for sustaining the current level of crop? 
• Do some plants need more than others?
• What effect will a grow light have upon these numbers?

Analysis

Things are stable, so there's nothing to report. I'm going to use the basil for a pizza soon. I'll let you know how it turns out. For the (obvious) record, we intend to eat the items grown in this system, but not eat the goldfish. However, it's not uncommon for such a system to harvest both fish and plants; just not goldfish. :)

I also plan to take out the lemon balm (picture far-left) from the growbed and transplant them to the front and back porches. I've become obsessed with keeping away mosquitos this season as they were friggin' annoying last year. The nasty, deadly viruses they transmit, including Zika and West Nile, are also more than enough incentive for repelling them.

I'll report back in a few days and provide some pics as well.

The Numbers

Date	GH General Hardness	KH Carbonate Hardness	pH	NO2 Nitrites	NO3 Nitrates	NH3/NH4 Ammonia	Temp °C
25-May	120	40	7.0	0	80	0.25	24°