G
Guest
Guest
No worries, and thanks. UKAPS is one of the remaining few forums that is still very active, and maybe you've hit the nail on the head as to why.
To be a little more precise, it'll last indefinitely if the substrate cap has an average grain size of around 3mm, and if you water column dose fertz, like you mention.
3mm grain size will allow for water movement, nutrient transference, and gas exchange, and in turn encourage a healthy oxidised microzone.
And aside from that, water column fertz dosing combined with a good soil substrate (with a high CEC) allows you to feed plants at both sites, so just makes sound horticultural sense anyway.
To be a little more precise, it'll last indefinitely if the substrate cap has an average grain size of around 3mm, and if you water column dose fertz, like you mention.
3mm grain size will allow for water movement, nutrient transference, and gas exchange, and in turn encourage a healthy oxidised microzone.
And aside from that, water column fertz dosing combined with a good soil substrate (with a high CEC) allows you to feed plants at both sites, so just makes sound horticultural sense anyway.