This will drain all of the water out of the tank and down the commode. If you can't flush the toilet for some reason, you can also use a cup or a hose to remove the water from the back of the tank. The tank is attached to the wall by the supply tube and attached to the toilet bowl by two bolts underneath the tank. Use an adjustable wrench to loosen and remove these nuts so you can remove the tank. You may need to use a flathead screwdriver to hold the bolts in place as you turn the nuts under the tank. Place the tank upside down next to the toilet bowl on a stable surface. If you want to avoid water getting on the floor, put some towels down and place the tank on top of these. Placing the tank upside down will give you direct access to the flush valve on the bottom of the tank. This is the large nut in the middle of the tank that holds the flush valve in place. Once you've unscrewed the locknut, simply push on the flush valve to pop it out. For best results, use a plumber's wrench to unscrew the locknut. Push the new flush valve down against the tank opening to install it. Follow the manufacturer's instructions to ensure you install the new valve properly. You can buy a new flush valve at any retailer that sells home improvement supplies. Reattach any parts of the flush valve that you disconnected when you were removing the old one. Be sure to replace the gasket over the locknut, as well. Tighten the nuts that you previously loosened that affix the tank to the supply tube and to the toilet bowl. Once the tank has been reattached, you can turn the water supply back on and refill the tank. Once the installation is complete, flush the tank to ensure that the leak is fully gone. If it isn't gone, check to make sure the leak isn't coming from somewhere else. If water is still leaking into the toilet bowl, go back and make sure you've fully tightened the bolts attached the flush valve.
++++++++++
One-sentence summary -- Turn off the water supply to the toilet and flush it. Remove the nuts attached to the supply tube and to the toilet bowl. Lift the tank off of the bowl once the nuts have been loosened. Unscrew the locknut on the bottom of the tank and remove the valve. Place the new flush valve in the spot where the old valve was. Tighten the locknut with a monkey wrench to complete the installation. Place the tank back on the toilet and tighten the bolts.

Probiotic supplements contain yeasts and bacteria that are similar to those that are in a healthy gut. These bacteria assist with digestion. They may be able to lessen bloating due to: Diarrhea Irritable bowel syndrome Difficulty digesting fiber Though this natural remedy is frequently used, it is unclear if it is actually effective against gas. If you are interested in trying it, you can purchase it at your local pharmacy. The following contain charcoal: Charcoal Plus CharcoCaps These medications are supposed to help break up uncomfortable gas bubbles in your digestive tract and make them easier to pass. While frequently used, these products haven't been scientifically proven to be effective. If you try them, read and follow the manufacturer's instructions on the packaging. Common brands include: Mylanta Gas-X Mylicon Gelusil If you really enjoy eating beans, cabbage, and broccoli and don't want to cut back, the solution may be to use Beano. This product contains enzymes that help your body break down foods without producing as much gas. You can purchase Beano at your local pharmacy. It is available as tablets and drops. Read and follow the manufacturer's instructions. Many people who are lactose intolerant may still crave dairy products like ice cream. If this describes you, you don't have to give up dairy. You can supply your body with the enzymes it needs to process dairy in a supplement. Common brands are: Lactaid Dairy Ease.
++++++++++
One-sentence summary --
Rebalance your gut bacteria with probiotics. Try activated charcoal. Experiment with products containing Simethicone. Add Beano to gassy foods. Take lactase enzyme supplements.