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all answers will be very appreciated.

75 gallons is usually considered minimum for a single male red eared slider. Females need 100+ gallons. For two to be housed in the same aquarium I wouldn't go any smaller than 150 gallons, and the risk of aggression is still a major possibility.

my goodness. I thought it was 10 gal per inch. I think my RES is about 7in and I was looking for a new tank (75gal). Will that be too small? Im concerned about her growth since she's in a 20 gal currently

You are correct. As a general rule you want 10 gal per inch. The original question was regarding 2 turtles in one tank. If you have TWO 7 inchi RES then you'd want the 150 gal tank. If it's just one then 75 should be ok, but I wouldn't go any smaller for sure. I know my turtle does love his space and I'm looking for a 55 - 60 gal already if not an upgrade to something larger for an outdoor habitat. His shell currently right at 4 in x 4 in and his 29 gal tank is getting cramped for him especially since his health is on the mend! I expect him to start growing again rather quickly.

Thats another thing Im concerned about; once I get a 75gal tank, how soon til she out grows that one

SeriSlider wrote:Thats another thing Im concerned about; once I get a 75gal tank, how soon til she out grows that one

If you know you have one female RES, then a 100 gallon is all you will ever need. Now keep in mind, you will be fine with a 90 gallon but you can always look for tanks 100 gallons and up.

They grow kinda glow. Mine are 10 years and still growing. Sylvie is just now getting to 10 inches and Raina will be hitting 11 soon I suspect

sflemin2---you're scaring me!

slow*
Miss Tee, I had no idea mine would get so big when I bought them! I will measure them today when I get a chance. If I ever get rich, I will have to build them a huge indoor pond in my mansion lol

Well, be sure to invite us over for a dip

Lol I will have a turtle block party!