how big is your tank? if you have 4ft and above, maybe you can try derick as he sells industrial type of ac fans which could be really useful.
if not just search up for a DIY fan online, it's kinda easy to do it if you follow the instruction carefully... =)

http://www.my-mac.net/forum/viewtopic.php?f=13&t=6093

i diy refer to dis..easy...hahaa

lol....u can do it lah..easy wut...a small pc fan..i guess 90mm one..buy cheap ac source...i bought mine rm10 (0.5amp)

this fan is noisy and underpower, get the Dymax fan better or the UP aqua fan.

ive read a review of it from another blog. pros-compact size,comes with airfilter so itseasy to clean
cons- loud at 12v, the guy in that blog changed the power supply to 9v, and its rather silent

emm maybe heat. then moss will die

moss also need light + nutrients to grow. even though i failed on many occasions to grow moss  properly which is really a lot of ppl say is the most hardy plant, i'm at loss with this plant.

to your question, the moss will die if the water temp is too high. if too much light n no nutrient also it will not grow. i don't think they will die from too much light.

*pls take this with a pinch of salt*

I guess u need to monitor the moss responses.

what i notice is that moss will try to adapt to your water parameters first. they may seem stationary with no growth (not going brown ; coz brown means dead). then maybe a few days later, they will start to give our small n brighter green tips. these bright green tips is the new growth.

so i would think that if ur mosses are going brown, means they are not good with the light, u shld move them away to lower brightness area (move light upwards or the moss further down the tank...

if anyone got a better experience, i stand corrected.

do the science project!

beware : curiosity kills the cat!

just joking!

put a glass of water or pail of water with fan that u r going to use n measure the temps in both areas.  from there u will get an idea of the water temp for your future tank.

my guess is that u will end up @ upstairs.

i call it test water before dunking urself into it!

why all the trouble, as its proven fan power can only drop 2'c to max 4'c from room temp, just measure your room temp. will do.
There is the limit of fan, else no one gonna buy chiller.
Rules is bigger tank need bigger fan like bigger tank need bigger chiller to perform effectively.

yes, different volume will affect the end temp. but if u calculate it pro-rata basis, u will get a rough idea. we're not scientist so any value we get is just a rough idea only...

its a hobby dear... dun be so frus abt it.

Then easy, just measure the water temp, using 2'c to max 4'c rule , you can determine the min and max temp for your tank while using fan cooling.

if your aquarium is located nearby open window or good air circulation place you can get temp at 24C with just fan. Tried before with nano setup.

yeah i put my aquarium upstairs too but nearby a window, so the temp will drop till 24C during the night and will rise back (after 12pm) 26C on a hot day. But need to top up water everyday, very troublesome.

nop

Thanks for the advice, I will take note on this. May I know at least how many yamato shrimps should I put in my 2ft tank as currently I have

i)  7 cardinal tetra
ii) 3 guppies
iii) 1 otto

and will these fishes compatible with yamato?, especially these guppies? (scare these yamato will nip guppy tail)
Anyone got experience putting yamato with guppy togather? will they get alone together happily?

how is all the things?