Wollv wrote:and have been having alot of troube building up finger strenghth by just climbing.
You're doing something wrong if you're climbing but not building any finger strength. It's like saying 'I want to get in shape for running and can't seem to do it by running alone.' I think your problem is that you'd like to progress faster than you actually are.
Rubber donuts and weights aren't going to do that much. They're OK as a supplement, but consider that most really good climbers never bother with them, other than with weights to work their antagonist muscles to prevent injury. The best advice here is from Short Timer: to boulder outside, or from the other person who wrote, climb more, rest more. Climbing outside is the best way to build pure finger strength, apart from a hang board. You'll build endurance in a gym but your finger strength will likely suck. Use a hangboard as a beginner and you're likely to get injured.
Plus, climbing is a function of far more than finger strength. You need to work on your footwork and your lock off strength. Building technique as a new climber is FAR more important than strength. I've seen a ton of strong climbers who suck but lots of not so strong ones who are good on the rock. I saw many examples of that maxim just yesterday at Stoney Point.