peter said:
I hear what you say george but have used them in the past and my own experience shows a spert in growth about this time of year when the undersoil heating kicks in also bulbs do well with some bottom warmth you are also converting you substrate inyo a huge but slow biological filter .Ilike proving exprts wrong
peter
I hear you too, Peter.
Proving experts wrong is fun isn't it? But you need controlled experiements to do so. Tom Barr would have a field day with this thread.
How can you be sure it is not coincidental that growth is improved with the substrate heating?
Wouldn't the bulbs react anyway to the seasonal change?
My crypts have put on a huge amount of growth recently too, for no apparent reason I can think of. No substrate heating though.
Isn't the substrate a slow biological filter anyway with no heating? I'm sure it is.
Food for thought, anyway.
I look forward to the results, thanks for sharing. Will you be running another blog on the PFK site?