Around 30-40 mins ago I changed aquarium water, cleaned the filter and dropped some toya food for my turtles. Now I am seeing water turned red, I have already checked there are no cuts, bites or bruises on turtles.

What could be the reason, why water is red? Is this infection? Could it effect me also because I changed water with my hands, w/o any gloves, using buckets.


  1. The source of the new water is city Supply = tap water = hard water. Its the same source of supply from past 9 years for them. Touchwood! There growth is pretty good.
  2. I change the water whenever I see that the water is too cloudy due to food, I change the water, approx in every 20-30 days.
  3. I have been feeding same food for a pretty long time. It always seemed that they like it because the moment I drop the food they grab it like they are hungry from ages. enter image description here
  4. I do not use anything for dechlorination. Looks like I don't need dechlorination. They are going w/o it.
  5. I Did not use one or employ other techniques such as ageing my water.
  • 1
    is it possible for you to post a picture of the water,fill a glass whith water and hold it aginst a white background. Jun 13 '17 at 5:35
  • 1
    @trondhansen I changed the immediately after I saw it
    – paul
    Jun 13 '17 at 5:52
  • How deep can you look inside the water? 10cm? To the backside of the aquarium? Jun 17 '17 at 15:53
  • How deep can I look? I am not looking into the water from top, like removing the aquarium lid and then look inside. I am looking into throght the glass from a distance of 3-4 feet and it looks red-ish (dull red).
    – paul
    Jun 17 '17 at 18:22
  • Wow the same thing happen with my turtle water yesterday. I freaked out because i didn't know why the water turned bloody red. I took a picture of it which im trying to post
    – Chrissy
    Sep 11 '19 at 11:11

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