Quote Originally Posted by Eleven11
Would diluted castile soap work? I noticed aphids on the center leaves of the peppers and on some of the lettuce leaves.

I have used neem oil and castile soap on insects on house plants but am not sure what to use in the AP system.
It might work.

However, I rely on ladybugs and assassin bugs as well as other beneficial insects to get rid of aphids. I actually prefer to let an aphid infestation get out of control on a plant or two at the start of the season because it establishes beneficial colonies in your garden as well as keeps them coming back year after year. It's less work for you, lighter on your wallet, and better for the environment and your system.

"The enemy of my enemy is my friend."