Keep a close eye on the pH of the Promix as it get's older- they mix lime w/ the peat to buffer the pH up- peat is naturally very acidic. Eventually the lime is consumed and pH starts to nose-dive. No big thing if ya watch for it.

The compost must act as buffer in the Calloways ( or maybe the shale- very broad term)- otherwise you'd be treating the water the other way. Prob a fair bit of compost, or at least a fair bit of surface area.

Go ahead and use the Calloway's- just cut it with a bunch of perlite. You'll have consistant chemistry, makes it much easier to manage. Multiple media is a headache that you can avoid. Perlite's inert, so chem remains the same, just dilutes it. will drain much quicker, which is usually a good thing.

Hmm- album title in that... " The Chem Remains The Same".
rhizome Reviewed by rhizome on . 77-80 Degrees w/ 35% humidity. Possible heat problem? I have a few plants that are exhibiting some problems while others are doing just fine. These plants are only about 7 days old. My soil has no nutes and PH is around 7.0PH. I water this with water PH'd to 5.9 and the runoff comes out to be between 6.3 and 6.6. I only water twice a week, trying to get 3-4 days in between. I germinated these seedlings in paper towels and then placed them in rapid rooters before placing them in their semi permanent homes. Please take a look at my Rating: 5