
My first Pacu tank in the garage using landscape timbers
measured 8' by 8' by 4' deep and contained 1,600 gallons. |

I used 60 D nails / spikes, 5 in each timber per row, one in each
corner and 3 evenly spaced along the 8 foot span. Each
successive span requires the nails to be offset 6" to avoid hitting
the head of the nail in the tier below. |

8' x 8' x 4' = 1,600 gallon tank. Note: The nail
holes must be pre drilled to a size slightly under the nail diameter
to prevent the wood from splitting. |

When I built my 2400 gallon aquarium I also inserted 8 Sampson angle
braces, one in each corner on top of the first row of timbers and
another 4 up about 12". I used 3/8" by 8" lag screws. |

I have used JM type two inch foam insulation with an R-13 value on
top or anywhere it can't get waterlogged; otherwise use the 2"
closed cell Styrofoam insulation with an R-10 value. |

In the garage with an ambient temperature of 65 degrees, this insulated tank requires one 300 watt heater to
maintain 78 degrees. |
Liner
is 6 mil con-tractors plastic. A black PVC 20 mill pond liner would have been
better as the pacu soon chewed holes in the clear plastic. |
Temporary filter
with two 50 gallon sump tubs which can support a 200lb. fish
load & 5 lbs. daily feed. |
Top
tub is siphon overflow, center is a fiber mechanical
filter, bottom chamber is the bio sump with heaters. |
 2,400 gallon tank under construction,
12' x 8' x 4' high. Glass window is 1/2", 3/4" would have been
better. |

The window glass is 88" by 34" overall, with a 2" mounting surface
on all sides the net opening is 84" by 30". |

I used 4 of these Sampson angle braces to secure the window frame
corners,
as shown in photo to the left. |
 Installing 7 ft
glass window. I used 12 tubes of Silicone II sealant from
Home Depot,
The glass should rest on 3/16" thick 1/2" by 1/2" square neoprene
rubber shims placed every 6" inches all the way around. Let the
Silicone cure for at least 3 days or more in warm weather, longer if
below 70 degrees. |

Installing 4 inch overflow drain. I used ABS pipe flanges
with 1/4" rubber gaskets. I drilled a hole through the cherry
wood timbers, splitting the distance between them so so no timber
was completely severed. |

2,400 nearly done summer 2003.
Timbers are all glued in place to 3/4", CDX, plywood with
"Resorcinol" two part mixed wood glue. All surfaces must be
clean and dry. Next everything is painted with a good quality,
water based latex primer. Two coats may be required to cover
blemishes. Finally one coat or two would be better of semi-
gloss exterior water based latex. Let it dry for 3 days at 70
degrees |

"T" section used to secure top straps, 2" by 6" timbers on 4 foot
centers. See photo to the left and right. Note: The 4'
by 8' Styrofoam covers fit snugly resting on the top straps. |

I used a total of 12 each 4" by 4" treated timbers. One row
around the base, a second row to frame the bottom of the window and
a third to frame the top of the window. As the 4" by 4"
timbers are slightly different in size from the cherry wood timbers
it is necessary to use the same timber for the entire row to
preserve uniformity. |
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Filter box, 350 gallons, 3 chambers |
Center
chamber contains 50 gallons of bio mass. |
Water,
power & remote temperature readout in ditch. |
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