I don't have an opinion on most of the ingredients but I do know that a lot of available Calcium really promotes the plant growth.
One thing about an engineered substrate like that would be to try to make it with a tendency to hold the nutrients more than to release them in the water. I guess CEC is what needs to be tweaked just right. If we look at the ADA system using common sense that is exactly what they do - the liquid fertilizers are added to the water but are meant to feed the plants through the roots. They are not meant to float free in the water and they are not added in ungodly amounts (so to always provide a great environment for the algae). The properties of the substrate really make a difference if one uses it as intended.
Please don't give up on that project. I'd like to see more and more reasonable ideas/implementations like this one. So we all get out from the rut we have bogged in this hobby for a long time.
--Nikolay
One thing about an engineered substrate like that would be to try to make it with a tendency to hold the nutrients more than to release them in the water. I guess CEC is what needs to be tweaked just right. If we look at the ADA system using common sense that is exactly what they do - the liquid fertilizers are added to the water but are meant to feed the plants through the roots. They are not meant to float free in the water and they are not added in ungodly amounts (so to always provide a great environment for the algae). The properties of the substrate really make a difference if one uses it as intended.
Please don't give up on that project. I'd like to see more and more reasonable ideas/implementations like this one. So we all get out from the rut we have bogged in this hobby for a long time.
--Nikolay