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What is the temp in your planted tank?

20 - 23 in winter, 22 - 26 in summer, mostly about 23. Two small tanks in winter about 19 - 21.
 
22°c 🙂 pops up a little during the summer but only by a degree or so.
 
I keep mine as low as is practical in summer - it can get blistering hot at times and the AC is only in the living room. Half the tanks are in my bedroom.

I use fans sometimes just to try to keep the water temperature from rising higher than 28C.

In winter it’s the reverse - it can get as chilly as 14C (like it did last winter) in some rooms, so I have heaters set for around 21 - 22 C for most & for the few truly tropical fish, at 25-26C.
 
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My tank is heavily planted, albeit with easy plants (crypts, swords, vallis, etc), and has a shoal of about 20 Cardinal tetras. For this reason I keep it at 78F. Without the Cardinal tetras I'd probably drop it to the default temperature of the olden days - 75F.
 
18C - Medaka Tanks, White Cloud Tanks, CPD Tank.
20C - Guppy Tank.
25C - Community Tank.
27C - Betta Tank.

Most plants seem able to thrive in all of my tanks but some standouts that really didn't like the room temperature drop down to 18C are S. Repens and some of the smaller Java Fern variants. Everything else either stopped growing but survives or grows.

Some standouts in my 18C tanks are Pearlweed (pretty much hasn't changed its growth rate), Rotala Rotundifolia, Hygrophila Polysperma, Helenthium Tellenum Green, Eleocharus, and Eleocharis Parvula.
 
24 but surely this is stock depandant? Planted tanks with discus will be much higher. I've heard the colder the better within reason, C02 works better at lower temps so plants do in theory
 
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