Hi team,
taking the journey forward… I have a personal belief… “If you find help coming from unexpected sources, nature is showing signs that you should continue doing it”
Similar thing happened to me, I was researching on aquaponic setup and bumped into fiberglass water storage tanks, molded and light weight, single piece, easy to transport and can be custom made to suit any size/requirement. Reached to the website of Ideal Fiberglass and found they had some products which highly impressed me… so just took the phone and called them, reached their factory next day morning accompanied by my equally exited niece.
After knowing about my purpose, the people there showed me a tank which was just about right for me, it was lying in their junk stuff. After a slight round of negotiation, we both were happy with the price we arrived for it. After doing some circus and trimming of the sides, it fitted into the back seat of my accent.
This molded fiberglass tank was ideal for a startup like me. First i thought this to be growbed, but since it was moulded 1 piece and no water leakage I decided this suits best for fish tank.
Now the hunt was on for a growbed. First I thought i will go to some plastic seller and buy tubs and drill holes in it, then i decided to check out some scrap vendor and was surprised, internet has no junk seller on the net for India/Bangalore… business idea for the taking…
As I was on the net scavenging for grow beds, my mom came and told me that there are some tubs kept outside on the road near my place which might suit. Next moment I was on my bike heading towards it. Shocking as it was, I found lot of labsinks disposed off on the road. Checked with the caretaker and he was very happy to give it free of cost (wanted to get rid of it) there were about 20 of them lying there, in next 15mins I was there again with my car.
Never in my imagination had i thought porcelain sinks would be so heavy, I think they were about 20kilos each
I could fit 7 of them in my car and was worried about the shocks, somehow got it home and there was a bigger challenge there. Taking them to the 2nd floor (terrace) took me 3-4hrs just to transport the 7 tanks to my terrace and I was exhausted to the core.
The physical exhaustion was relieved by some tender coconuts and the emotional happiness of getting the 2 main ingredients for my set up. Fish Tank and Growbeds 
I have added some pics of the fiberglass fish tank and labsinks(growbeds)