I was wondering if anyone has used the Cultilene Big Block 15cmx15cmx15cm as an alternative to using rockwool slabs.
Does anyone think they will be big enough to hold the root system of a plant which is put into flower at around 12".

The grow shop reckons they are big enough, but i would like other growers opinions.
The shop reckon they are three liter cubes, don't know how he worked that out cos my maths aint good, they are nearly twice the hight of the slabs, but obviously shorter, but I'm thinking the extra hight will compensate for the reduction in length ?

The advantages are that they are transportable from one place to anohter, and can also be removed much easier than slabs.

Anyway would like to know what people think/