Standby Agreement. An agreement between the issuer of a security and its underwriters stating that the underwriters are responsible for any unsold portion of the issue. That is, the underwriters agree to buy the remainder of a new issue if they are unable to place its entirety with investors.
A sponge has water flow in through the pores. The water contains the food and oxygen the sponge needs. Respiration. A sponge takes in water through its pores and in more advanced forms, with canals that move the water to all throughout the sponge.
5. Thatâs it. Now return the sponge or pad to the filter and return the filter to your fish tank. Pour any remaining water from your cleaning project inside it, if it isnât crawling with gunk, that is, and turn the filter back on.. Siphon or scoop out some water. You will need about two cups of water from the tank to use to clean the filterâs sponge. For the benefit of your fish, you will want to use existing tank water, not tap water or distilled water.