It can reach 28-29 Celsius degrees .
Yes , I'm thinking also to buy a small cooling fan ... I heard this one is pretty good for this job if you have a small tank:
http://dennerle.com/en/products/nano-aquaristic/temperature/nano-coolair-eco
Nice!
Looks like N or P deficiency?
My tank is at 28degrees celsius this summer and the only plants suffering are mosses, particulary the fissidens which is getting Brown.
Amazing! Congratulations on the well earned ranking
Congratulations on the success of both scapes, their rankings were well deserved.
Nice pics but some of your plants looks hungry!