I've really been enjoying my grandpa's old SLR camera, and having just ordered a telephoto lens (ebay, so inexpensive enough for my budget has me crossing my fingers, but the seller seemed legit enough) should give me the range to do my favorite type of photography (bird and wildlife). I also do some macro, though, mostly photographing flowers or my fish. Considering my budget being very small with no indication of expansion in the next 5 years or so, and that these photos are only for my own use, I am considering getting a set of extension tubes rather than trying to save up for an expensive dedicated macro lens at this time (will hopefully get one once I have the means). Those of you who have used extension tubes with standard lenses - could you tell me whether I will be pleased with them for this use - flowers and fish - or whether I am just setting myself up for frustration? Thank you for any advice you can provide!