Hehe I heard of planktons before but shrimp certainly is a first.. haha nice one. Brother you need to get into aquaponics, even just start with a small fish tank all you really need is a pump fish tank and some plants.. Its amazing and I can see you are a man like myself with 'green fingers' you will NEVER regret it, no better way to grow food exists. In my humble opinion, of course ;) Cheer$;)