Plants look sickly in early phase, pH keeps dropping

Started this discussion. Last reply by David Mitchell Dec 28, 2013. 20 Replies 0 Likes

My plants need help and I am not sure what to try next.I just have a tiny trial AP system from which I am trying to master the basics: 10 gallon tank, 10 gallon hydroton/lava rock grow bed, flood and…Continue

Should broadcast seedlings be covered with clear plastic?

Started this discussion. Last reply by Jonathan Kadish NYC AA Chair Nov 25, 2013. 1 Reply 0 Likes

I can't seem to find the answer to this in the previous posts.When broadcast seeding, in hydroton, do you need to cover the area with plastic or a dome to keep it moist while germinating?I've done…Continue

Any recommendations for a reliable digital pH meter?

Started this discussion. Last reply by Jeff S Mar 7, 2014. 5 Replies 0 Likes

I have a Hanna Checker digital pH meter but I think the probe is at the end of its lifespan.  Before ordering a new probe, I wondered if any of you experienced folks have a preferred pH meter…Continue

Tags: pH

Are red lava rocks stained, or are they naturally red?

Started this discussion. Last reply by Layne allen Feb 28, 2014. 4 Replies 0 Likes

Quick question as I set up my first small system.I am planning to use mostly hydroton for media, but also a 25% bottom layer of lava rocks.  The only type available at my hardware store are "red lava…Continue