Sorry, I haven't set anything up on Flickr. I used PhotoBucket for 100's of pictures I posted on TFP. I don't know if you heard about it, but PhotoBucket locked up all forum (not just TFP) pictures. To release them within the forums, they want each account to pay $399.00.
So many of use are trying to decide the best way to go. I have too many pictures for TFP's photo saver, and Imgur states clearly in their Terms of Service that if they choose, they can do the same as PhotoBucket. I haven't had time to check Flickr's terms of Service. There's talk out there that eventually the current photo hosting sites will end up the same. Sighhhhhhhh......
Just make sure you back up your pool photos (any other photos, too, for that matter) on a cloud, flash drive, something! For you at this point, using TFP would be the easiest.
Anytime you're ready to manage your water, let us know. I'm a common sense, no non-sense person, and I strongly believe TFP is the way to go. It's one of the last free things given away on the web. You buy the test kit and the chemicals, and you save hundreds over the course of a year and sooner. All the teaching and advice is free. (well, I can send you my address...... LOL!!! I'm kidding, I'm kidding!
Let us know if we can help in any other ways!
Suz