desperatly need help with a sump for my 300g

[aaronb]

Just drill the tank. It's easy enough just look up how to online. The bean animal overflow system is the best way to go in my opinion. Sumps are your best option. Hang on overflow boxes aren't. You might as well go with a canister at that point. Good luck.

 

[dayak]

theres a section on sub forum here about DIY..visiting it would be helpful for you..im too lazy to type up..when dealing with the details not asnwered ask away..
to control the flow to your like get ball valve or gate valve, PVC ball valve is atleast half the price than gate valve

 

[creepyoldguy]

Op- for your drip plate, just make sure the holes are large and often enough for the water to pass thru. You'll have no prob w 2400gph. I'm sure if you look at some of choppers threads on here, you'll find a formula for flow rate although I think it is fairly simple

 

[ozzyboo]

There is plenty of info on the forum about some of the questions you have

How to size a pump to your tank
http://www.monsterfishkeepers.com/forums/showthread.php?47105-How-to-size-a-pump-to-your-tank

Pipe sizing charts and flow rates
http://www.monsterfishkeepers.com/forums/showthread.php?205645-Pipe-Sizing-Charts-and-Flow-Rates

DIY overflow
http://www.monsterfishkeepers.com/f...9465-DIY-Overflow-101-The-Mysteries-Explained

DIY PVC overflow
http://www.monsterfishkeepers.com/forums/showthread.php?15733-diy-overflow

That is just a few threads that would certainly help you with some of the questions you have,Pretty sure there is something about drilling a tank somewhere on here to if you decide to go that way.