EDIT: Answered my own question. Yes it does take more resin for mat I should have used 2 liters. Mold came out ok I have some spots that need patching. due to not having enough resin but it came out nice otherwise.
It has been a few years and in general the parts I have made with glass have been small besides my boat but that was gallons of the stuff. I can only buy the small cans of resin at the local place I believe they are just a liter. I though half a can would cover the tank. I ran out!!!!

Does fiberglass cloth soak up way more like 2 times the resin mat does or did I apply wrong. I tried some techniques I saw online from some good looking parts. I never used the dabbing technique before and that seemed to help I also used to just dip my mat in resin and squeegie it out with either a roller a spreader card or brush. I wanted to go three layers on some pretty heavy matt but I ended up in the 1 to two range. all big surfaces are two but some of the details are a single layer and I am afraid to pull it off the tank. I also tried hair spray over my wax as usually I do this over foam or a smooth steel sheet or tape but the tank is big and I wanted it smooth. I ended up having the resin run away from the tank when I did my gel coat. I also didnt do gel coats before and it has cause me hours of filling and pain.