PVC Overflow with
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The extra materials and effort needed for this
design provides the added benefit of multiple
points of water intake over a more basic design
that draws water only at the surface.
For aquariums with a heavy bio-load, the
mid-level and lower-level water intake holes will
help remove heavier free floating debris that is
inclined to stay in the lower areas of the water
Cement the 3" PVC Test cap to the bottom of
the 3" PVC pipe. You may find it easier and less
messy to apply the cement to the rim if the 3"
diameter pipe instead of applying directly to the
cap. Set the cemented pieces aside to cure.
* Using a 1" drill bit, cut a hole in the top of one
of the 1½ PVC slip caps. You can offset the
hole from the center a bit to allow more room on
one side of the cap for water intake, but the cut
hole should be at minimum 3/8" from the the
edge of the cap. The hole is for a 3/4" pipe with
an outer diameter of 1".
* With the hole drilled, trial fit the slip cap on the
1 1/2" pipe and insert a 3/4" pipe thru the drilled
hole. The temporary 3/4" pipe should fit snugly.
Do not cement the 3/4" pipe into the 1" hole.
* Cement the 1½ PVC cap to one end of the
1½ diameter pipe.
* Immediately press down firmly while the
cement is still soft.
* Cut several water intake slots into the cap
using the cutting tool of your choice. A Dremel
rotary tool would have been ideal for this step,
but in the absence of one, a jigsaw was used.
An alternative and possibly easier option to the
slot design would be to drill a series of holes
* Cement the second (non-drilled) 1½ cap to
the other end of the 1½ diameter pipe. Just as
with the top cap, immediately press down firmly
while the cement is still soft.
* After the cement has had a few minutes to
cure, insert a 3/4" PVC pipe thru the 1" hole but
do not cement. The 3/4" pipe will be used as a
temporary aid to help position the 1½ pipe
assembly inside the 3" pipe.
* Apply a quarter sized amout of cement to the
back of the upper and lower 1½ slip caps. Take
care not to get any cement on the 3/4" pipe
since we'll want to be able to remove it later.
do-it-yourself aquarium and semi-aquatic background designs beyond the traditional
Disclaimer: Exercising reasonable safety precautions
when performing the steps described in this article
are the responsibility of the individuals building the
background. Dramaticaquascapes.com is not
responsible for personal injury or property damage as
a result of following steps outlined in this article.