Hi, I've had it with paying for labs to do my negs. It's time to start saving money. 1- Can I use one developer for Neopan/Tri-X/Ilford including ISO from 100 to 400 or is it better to use brand specific developer for each film brand? 2-Should I buy a tent or seal my bathroom? If the tent is just as reliable, I´d rather do that than sit in the dark. 3-How do I keep temperature constant? This has always been my fear. 4-Finally, what equipment should I get? Many thanks in advance for feedback. Robert.