I have been collecting alot of plants lately alot more than really looks good in my tank. There are quite a few that I would like to get rid off but am loathe to chuck them because I know I would like to try them again in a new scape at some point in the future. One thing that I have done is to set up an old coffee jar with a layer of soil followed by a layer of gravel and filled with rain water. It was originally set up to test the soil before I used it in my tank but has since become a storage jar for duck weed, riccia and elodia densa which I nolonger have in my tank. There is also some cryptocorne growing in the soil. There is a tight fitting glass lid that came with the jar and a few snails, the plants grow very slowly and I dont add food/ferts or do water changes - so it is essentially a closed system. Apart from setting up other tanks has anyone else tried this? What have others used to store unwanted aquatic plants?