I have a tropical fish tank that is up and running with heater and filter and uv light all set up, just dont have any fish in there yet as my mom hasnt got round to it yet. I currently have my turtles seperated as 1 has an R.I, he is in a tank but its not as big as the tropical 1 i have set up, would this be ok or would i have to replace water and clean it?

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0.1 Perfect partner - Katie
1.0 Carolina Corn - Kazza - R.I.P little guy
1.0 Anery corn - Trigger
0.0.1 Snow corn - Marlene
1.0 Normal Royal - Boycie
0.0.2 Cumberland Slider - Rodney and Del
0.1 Alsation - Sasha
0.1 Labrador - Jess

most infections cant pass from different species, how can a fish tank be suitable, heat? land?

Well they need water so a fish tank would be suitable for a turtle or am i looking after the wrong species, my question is not about spreading disease, ( i have seperated them so it cannot spread), my question is would a turtle be ok in the water that is for tropical fish or would i need to change the water?

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0.1 Perfect partner - Katie
1.0 Carolina Corn - Kazza - R.I.P little guy
1.0 Anery corn - Trigger
0.0.1 Snow corn - Marlene
1.0 Normal Royal - Boycie
0.0.2 Cumberland Slider - Rodney and Del
0.1 Alsation - Sasha
0.1 Labrador - Jess

i keep my turtle with tropical fish, so its either a turtle tank with fish in or a fish tank with a turtle in, either way both the fish and turtle are living in the same water and both are thriving

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0.0.1 alligator snapping turtle

Was your setup for the turtle and the fish were added or was it the other way around?

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0.1 Perfect partner - Katie
1.0 Carolina Corn - Kazza - R.I.P little guy
1.0 Anery corn - Trigger
0.0.1 Snow corn - Marlene
1.0 Normal Royal - Boycie
0.0.2 Cumberland Slider - Rodney and Del
0.1 Alsation - Sasha
0.1 Labrador - Jess

Its just plain water, as long as it has been treated, and it is fine for fish then it should be fine for turtles.

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Tom...

0.1.1 Bearded dragons - Stumpy & Milo
0.0.1 Bosc Monitor - Chaos
0.0.1 Hognose - Mash
0.1.0 Dumerils Boa - Storm
1.0.1 Candy Cane corns - Rubharb & Custard
0.0.1 Kenyan Pygmy Chameleon - Mach

both were added at the same time, i picked the turtle up when i bought him and on my way home i stopped to get some fish, the tank was already set up with the filter and heater running but had no livestock in it

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0.0.1 alligator snapping turtle

It'll be fine as long as you have the usual basking spot and lamps set up, you don't need to change the water.

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2.3.0 Southern Painted Turtles
1.0.0 Florida Red Belly
2.1.1 Common Musks
1.0.0 Classic Cornsnake
0.0.2 GALS + infinite babies
0.1.0 Tibetan Spaniel
1.2.0 Brahma Chickens

and filter graham!!!!