How do I change 10 to 15 percent of water of a 20 gallon aquarium?

This instructable is designed for small to medium sized tanks (5-20 gallons). ... .. In fact: if water values are good, only change 10% of the water! ... . the ammonia and nitrite produced, only a very tiny percentage occupy the substrate and water.

Partial water change frequency can be adjusted to accommodate the biological load, but ... . Votes: 15. Please refrain from posting on old threads for it bumps down newer, more relevant threads. ... Do you "Have" to clean your 20 Gallontank once a week? ... How much is 10 percent water change in a 33 gallon fish tank?

Instead, syphon out and replace about 25 percent of the water every week, and feed no more than the ... What are some good fish to keep in a 10 gallon tank?

I have a Walmart 10 gallon fish tank ... . We have 15 new fry. ... If they are not, a 20 or 25 percent water change every other day will usually fix the problem so long ...

You can do a 10 to 15 percent partial water change and gravel vacuuming after a ... the weight (water weighs about 8 lbs/gallon) of the aquarium in relation to ...

Water Preparation 10/15/06 What is your recommendation as far as regular water ... . A good benchmark is 20-25% each week for a busy aquarium, a bit less for a ... Add replacement water into tank (if 10% water change, then add one gallon ... ...

Larger fish tanks can tolerate a smaller percentage change of 10%-15%. This is ... I am cycling a new 20 gallon tank and made a comment on a previous post.