a few questions about my AG Setup

basically i just wanna know a few things like .....

should i take my water pump out once roots are about 6 inches ? more room for the air stone ?

do i need a EC meter ?

what sort of nutes are best? i have one atm its npk is 2.6/1/1 i think..its coco or someshit.

is there such is thing as to many bubbles ? like can it stress the roots? i have my air pump on 24/7

plus my plants are like 8 weeks old and are really small , they like look bonsia weed trees , any thoughts?

how often should i give nutes and when should i replace the water in the tank ?

You do not need to remove the water pump. But i would suggest turning it off when you have a decent root system going.

I currently have a 7 inch airstone in mine. Seems to be enough. And i am not sure about over oxygenating. I don't think you could harm it that way. Yes you want to leave you're airstone on 24/7.

Sorry not sure what a EC meter is. I will have to look that one up. I would get a pH reader and maybe a ppm reader. I do not have a ppm meter myself.

Might be small for a few reasons i think. Some others may chime in also. Maybe not enough light? Maybe not enough nutes? Root system is small? You have a autoflower?

I change out my res every week on monday. Each week i been giving it three equal parts of Micro,Grow,Bloom. Its a three part nutrient system.They have a chart to somewhat follow. I have Advanced Nutrients.

Hopefully others can give ya some good advice. read over the other Aerogarden Jouranls in here.

whats an auto flower? i got these seeds from a mate , pretty sure its bagseed

an ec meter is to test the electroconductivity in the water , just wanted to know whether or not i actually need one , i know there beneficial tho.

A autoflower grows from seedling to Harvest over amount of time period.Normaly 8 to 10 weeks. It can run on any type of light schedule and it will bloom. They grow short normaly.

if its badseed, not sure. It could be just a short plant.