I can take pictures of the finished spray bar and share some of the thought process behind the build.
With all the equipment used one could say overall cost would be $60. It could have been achieved at a lesser cost. Most of what was used I already had accumulated over the years and reused.
1st of all the bar is held in place by these magnet holders. $35 of the cost of these 3 holders was factored into the above cost. I have an addiction to these and have been collecting them so there was a few laying around
The PVC was found in the precut area at the hardware store and cost about $3. Plus each PVC joint was about $2EA. New water return line was $20. Most pieces of PVC are reused along with the barb fittings
Simple angle fittings to hook right onto the rim, a screw on type fitting to attach the spray bar, this was a left over from an old line-loc system. This has a 90° angle and is threaded to make minor adjustments if needed. I was going to NOT glue on the spray bar or cap at first so small adjustments could be made to spray angle if needed but feared of the possibility of the water pressure blowing it off and breaking the tank. A few mock ups where made before gluing. I was pretty certain the angle of the spray was close and figured minor adjustments could me made just by tilting the PVC stem outside of the tank.
There is versa-top glass tops and custom cut acrylic sheets on the backside. Since the input/output was reversed I just flip the acrylic sheets upside down and reverse them. Only had to make one cut out for the spray bar.