I've been reading a manual on developing and they recommend a developing tank. The book is a bit old (printed in 82) and I'm not sure if this item is still in common use, and if so, where can I get one? I don't have a photography equipment store in my area, and the online store I use doesn't carry this item. Are there better ways to develop negatives than this? Bear in mind, I have no access to a dark room, nor the means to make one any time in the near future.