anyboyd know how to use a python gravel vacuum and if ther really worth the 30 or 40 bucks b/c i was wondering if there really worth it b/c the petstores by me use them???
If you have small tanks (20 gallon or less), it probaly isn't worth the cost as you probably won't be changing more than 5 gallon of water at a time. But if you have larger tanks where a 15% water change involves at least 10 gallon then by all means, they are worth it.