Hi Guys,
regarding the Secret jardin Poles, you should be able to get some from your shop.
Shop can order spare parts (corners , handling tubes, waterproof mylar water trays, ...)
The company has increased there quality due to a few problems in the beginning of the year, and is now running great quality product to the market.
The Revision 2.50 product line seems to me to be offering the best quality tent on the market, and I personnaly recommand it's new DARKROOMS.
Luckuly I didn't have any missing parts in my DR120, and my babies are growing smoothly in it. Great product.
Secret Jardin now has a after sales service running smoothly, if you had some missing parts, get in contact with the shop you got your tent from and ask them to contact the SJ after sales manager (she is very helpfull). They should find a solution for your missing parts.
I hope this helps !