I'm "kicking around" an idea here for my drain on my 40B.
I'm thinking about having a downward facing elbow, (threaded into my rear bulkhead) that would face the bottom of the internal overflow box.
There would be about 1/2" to 3/4" space from the elbow opening to the overflow bottom, for water...
Tunze DOC 9002..almost new! SOLD
Breaking down my Biocube, that being said selling the Tunze 9002 skimmer purchase new about 2 months ago but has been used for a month packed in it's original Tunze box.
Plus Standard Upgraded Cup Tunze 9002 by inTank retails $29.99
ALL for $125 shipped
Getting ready to do some water change soon. Needed to know where is the best deal I can get them around here? If you or anyone have some would like to sell please pm me. It does not matter which one Reef crystals or Instant Ocean. I needed around 100 gallons of water change. Thanks