Betta Disaster

Hi, I'm new to googlegroups so i apologize in advance lol. Anyway this
was my original dilemma. I have three male bettas in a ten gallon tank,
separated of course (too small for three? i know..ive been kinda
thinking about that lately...). Anyway, they developed a bad case of
persistant Ich/Ick. Over the course of 4 days or so, I have been
treating their water with Rid-Ich and it seems as though the Ich has
cleared up. Now, here is where all the problems are. I think they might
be developing Finrot...which is a huge nightmare becuase I can't treat
the water with my BettaFix Remedy, or other Finrot Meds...because i
could have a potential disaster with the Rid-Ich (i understand that i
cant mix Rid-Ich with any other type of medicine/treatment..) It gets
worse. Being new to owning bettas, i thought their water seemed a bit
too cold for them (low 60s at the bottom of the tank) so i thought
"hey! why dont i put hot water in their tank from the tap!" good idea
right? wrong. I added a little extra water conditioner, pH balancer and
heavy metal detoxifier fo the new hot water being added into the tank,
along with some extra stress coat stuff for the fish...but it raised
the temperature at the bottom to nearly 73 degrees F. This is a total
disaster because the water temp. has been all over the place since my
room gets very very cold during the day when im not here. It gets even
worse. The water is cloudy. I dont know if its cloudy becuase of the
deep blue Rid-Ich ive put in...or because its dirty. The other thing is
that they all ate today, but one actually vomited or purged itself or
something the other day. I happened to be looking at them and one just
started spitting up a little bit, it looked like remains of food...this
was nearly 2 hours after feeding them. So this vomit/decaying food
matter/etc is lingering at the bottom of my tank...and im figuring i
need to get busy and siphon out the bottom....but i cant! the fish are
so stressed because of the water temp craziness that they would
probably flip out and die after i terrorized them thouroughly with a
siphon in their homes. I love these fish so much and im incredibly
attatched, please, if anyone can lend any info or advice or what you
think i should do next, i would be so thankful. OH yea, i should
probably tell you what equipment i have so far. So i have the 10 g tank
as i mentioned, now filtered again with a Whiper 10 Power Filter and a
16 inch strip light on top of a glass flip-cover. Plenty of rocks and
decorations inside. Anyway, thanks so much for listening and i hope i
can nurse them back to health.

Wes