I want to begin feeding my Rainbowfish cucumbers and zucchini. I've heard you have to boil it though, how long exactly should I boil? Also, how often should I feed it and can I store boiled cucumbers and zucchinI in the fridge? Do I just chuck the boiled cucumbers and zucchinI in the tank or is there a specific way of feeding? I want to make sure I know exactly how to do this.