Originally Posted by Edward
Can you go into more details why and how Osmotic Pressure can cause that?
I wish I could! I have just seen it mentioned by a few people who _seem_ to know their science a little better than I do, and from what I have read about osmotic pressure and from what I remember from my science courses at the university, it _seems_ to make sense.
This is just pure speculation but a larger body of water exerts a greater pressure on everything inside it.. (I think.. or maybe it's just depth that counts?) There's more pressure on the cell walls of all the plants. So maybe that means you get by with less nutrients. Everyone I talk to with a big tank says they require less ferts as a ratio of mls to gallons than a smaller tank like my 29 gallon. And maybe this increased pressure means the cells are more sensitive to environmental changes.. but who the hell knows?
Sorry, maybe someone like Tom Barr knows more about it?