so... tonight i do a water change and clean the glass. had latex gloves on but the water gets in them thru the top. finish cleaning look under my arms and the hives are firing up again!!! took a xyzal they are starting to go away now. i think its maybe just the salt water or something in the water has changed recently. i have been keeping saltwater tanks for 4 years now with no reaction untill this week. tonights reaction was very minor compared to sundays. but i am on steroids and xyzal. i think i will try the full arm gloves next.