The ph seems to be steady at about 5.8 - 6.4
The Lighting at the moment is natural sunlight from my window, which gets about 16 hours of direct sunlight.

I have a small 10gph submersible water pump to keep the nutrients from settleing, and an air pump with a fine bubbler.

There are six plants at the moment, and other than they have stopped or at least severly slowed in growth rate, they appear healthy. No necrotic leaves, no discoloring.

Also, I have a suspision that the salt content of my water is pretty high, because I have started to notice salt deposits on the growing medium. (Hydrocon clay pebbles)

The water temp stays around 65 - 70.

Also not to sound like a newb, but what exactly are nutes.