Ok cool, I'll see how this tote experiment goes so I can determine which route I want to go for the next crop. Thanks for the replies man! Hopefully someday I can get mine dialed in like you have yours!I think I have done 3 res changes the whole grow so far, I only really change out the res if I have any issues or changing the feed formula, especially at this stage as there going through almost half the res daily so I'm just topping off.