Okay.. tested everything... it actually looks pretty good, which leaves me more curious whats going on with my fish... here's what I got
Temp.: 79-80 F... it had fallen to closer to 75ish and over the last 3 days I've been letting my heater work to get it up higher... it's had a real chore of it, since its like 66 F in the house. The heater hasn't actually shut off yet, so I'm keeping an eye to make sure it doesn't go too high. I have two separate thermometers in there too, so it's pretty accurate... a degree or two cooler on the side without the heater though.
nitrate: 20-40
PPM... the color was really hard to tell on this one. It had a slightly orange tint to it, which was 20.. but it was also a bit darker, and that was 40.
nitrite: 0 ppm... if I remember the test right, this was the one that was a really pretty blue. The next step up was purple, and it was definitely a nice blue.
Ammonia: 0 ppm... it was much more yellow than lime green
pH: 7.0 - 7.2... it was honestly hard to tell. Then I used the "High pH tester" since it came with the kit and it gave me the lightest color on the chart so I figured the other one was probably more accurate.
So that leaves me puzzled... I lost like 6 guppies (I don't remember exactly) over the last 2-3 weeks maybe... I just lost a male the other day and my only remaining male is still acting a bit weird. It's like he can't swim. He constantly lays around and when he tries to swim, it's like his tail is too heavy and drags him back down. Some of the females are hanging out in the corner from time to time and it looks like they're clamping their fins.
I've been changing like 20% of water everyday for the last few days, though I didn't get to it today... none of my other fish seem effected... the corys actually seem to be MORE active with the heat increase... they're fun little guys, I wish I had space for more than just a pair.
Anyways, any suggestions at all what's going on? My only male left can't swim... well, he can I think, but it seems really hard on him.
I'll use the Prime the next time I do a water change, then... either tonight or tomorrow depending on the responses I get here.