Sadly, our tank started to get pea soup green water from photosynthetic algae. Super gross! On Saturday I did a 75% water change on the tank. On Sunday we woke up to 3 guppies dead and 2 on the way, 2 in decent condition, and 2 just fine. I thought it might be the water I purchased so I dumped that out and purchased water from another store and did another 75% water change just to be safe. It looked like all of the baby snails were dead, maybe a couple survivors. I put the larger, original pond snail back in just so he could help eat stuff.
Well, I'm not sure if there was something wrong with the water I purchased or if I shocked the system with such a large water change. The first two died Sunday night and the second group of two died Monday. So now we are left with just 2 guppies, females who seem to be doing just fine. Now, as I'm writing this on Tuesday, our water is changing green again! Oy vay!
I've never actually heard of green water in aquariums, only ponds so this has been a frustrating experience. Yesterday I tested my ph, ammonia, nitrite, and nitrate and they were all 7.6, 0, 0, and 0 respectively. I will test again later today to see if there have been any changes. I'm leaving the lights off in the tank for a 2-3 days to see if that kills the photosynthetic algae. I'll do a water change later today as well. We also have live plants so this has taken me by surprise.
Oy vay.