so i have 4 15 gallon tanks that are all already drilled in the back.
i would like to set them up like this diagram, however i am unsure if it will work well or not.
thoughts:
under the gravel filters in all or not ?
sand or gravel? and how much?
do i need more flow ?
whats the best way to place tanks, all level to each other? or each stepped down a little?
stack tanks instead?
do i add small inline filters between tanks ? if so ideas on how?
need to make it leak proof for if the power goes out it wont leak or drain.
( i added picture of tanks i will be using)
any thoughts ideas all are welcome


i would like to set them up like this diagram, however i am unsure if it will work well or not.
thoughts:
under the gravel filters in all or not ?
sand or gravel? and how much?
do i need more flow ?
whats the best way to place tanks, all level to each other? or each stepped down a little?
stack tanks instead?
do i add small inline filters between tanks ? if so ideas on how?
need to make it leak proof for if the power goes out it wont leak or drain.
( i added picture of tanks i will be using)
any thoughts ideas all are welcome

