Howdy, Colin.I recently started on my "small" test system after studying all things I felt related to barrel systems.
I started with a list; 1) keep it simple Stupid
2) list what I require from my design, then study it.
A) A barrel system: cut barrels for a stand were No Joy after watching 2 completely different ways (NOT Rule #1) I figured the hights each piece needed to be, stacked blocks and layed a 4x4 across. simple (Bonus 2 extra beds by NOT wasting a barrel for stands)
B) Expandable: Hoses and fittings instead of permanent PVC pipe. Plastic or nylon, not metal of any sort.
C) Portable: had to cut round growbeds, (not longways laying down) to move on trailer with 2 wheeler?
D) Solar Powered: No Inverters for 110v , just simple 12 volts dc.
Only a partial list and it took months to finish.
You require strong research and findings? Found this gem today.
http://www.aquaponic.com.au/fact%20sheets.htm
My eventual system will be IBC tanks as well. That's why portability was required, so I can keep the grow beds intact and plug into the new system.
I say start on the small system as soon as you can get the major parts together. Mine has been running for 2 days and the amount of info has been unlimited. That's just circulating plain water, no fish, plants and no grow bed media yet. I know most things work well (Flow rates, SLO) one or 2 need attention(battery capacity), some things will be addressed through the course of progression (insulation, etc.)
Real world tangible experience, with your system and circumstances, cannot be matched. Try what you feel comfy with and ask plenty of questions to keep you on track. Good Luck !
