No problem. Your filters are rated to clean up to or no more than 75 gallons of water. Less water is OK. 55 gallons is great size tank and your filters should keep it nice and clean. Your Oscars should be very happy. Don't forget to change the filters every couple of weeks. Have fun.
Two Hydor Koralia 3 Power heads are needed to keep the proper current flow in a 75 gal. saltwater reef tank.
Personally, I wouldn't keep anything in a 1.5 gallon tank. Not even a single Betta. I consider 5 gallons to be a minimum for a single betta.
ghost shrimp,
No. A 10 gallon tank is barely big enough to keep a single goldfish in.
Fish tank filters are not too expensive to keep using. Most of the money goes towards the initial cost of all equipment. You will probably spend about $20 a year on fish filters if you change them as often as you should. P.S., change the filter once a month.
Filters keep the water clean for the fish, kind of like we need clean air to breath properly. Also, filters keep the tank clean by (yep you guessed it) filtering the water. I hope this helped^^
a 10 gallon tank with land and water so it can swim
2 or 3
If you have six pregnant guppies then yes, they will give birth in your five gallon tank. That tank is not big enough for all of them to live in and the guppies will keep having babies. You will have to give them away, sell them back to the fish store, or get a much bigger tank if you plan to keep them.
The rule of thumb is to keep no more than 1" of fish per gallon.
depending on whether you plan to keep them till adult hood a 50 g tank will hold 4 adult angels