You can post pictures, by uploading them to Picasa, Flickr, Google Plus, Photobucket, etc and then linking to them using the button.

However, like you, we'll only be guessing until you have valid test info AND a 'history' of your pool.

You'll need either a K2006 (much preferred) or a HTH 6-way drops kit. The testkit page explains: http://pool9.net/tk/

In the meantime, if you have dealer test results, they may help. Post any recent results you have.

Also, we'd need to know about your pool: http://pool9.net/pf-equip-form/

Other than that, all I can tell you is (a) keep your chlorine up, (b) make sure your pH is between 7 & 8, and (c) make sure your pump is running 24/7

. . . membership upgraded.