Beside some substrates having more surface area than others and some being heavier (easier to work with), is there any proof that one substrate works better than the other if all of the plant nutrients are met by using the EI method?
Bill
Bill
Tom Barr said:Several studies showed that even with the roots cut off, the plants still grew at the same rate with the water column supplied with nutrient rich levels.
Regards,
Tom Barr