HELP! 6 month shrimp tank of slow deaths
What am I doing wrong!?!? This is my second shrimp tank and it is not doing so well. I wanted to advance on up to from neos to caridina shrimp because they look so unique. So I've set up this tank for half a year now and it has been frustrating me for the last few months. Originally I thought my tank was cycling for the first 3 months but now I have given up on the diagnostics. There is hardly any movement around the tank, as the shrimp and my snail just seem like they have no energy..
I've gone through 3 batches of shrimp so far and the same thing keeps occurring. I have been noticing 1-2 shrimp deaths every week or so and I can not pin point what is causing them. Perhaps molting issues as I do see many shells on the first few weeks of putting them in my tank? My parameters don't seem to be off for this species but why aren't they staying alive for me..
There has been a weird moss or algae that have been growing on everything and I am unsure of how to get rid of them without scraping it off my driftwood, almond leaf, alder cones, or walls. It used to look like a white jelly/spiderweb substance on the surface but now it's has changed forms in something brownish. Please help guys as I slowly bleed out!
I'm scared to do water changes because this seems to cause deaths at a much faster rate..
So here is my set up
Substrate: ADA Africana Soil
Lighting: Finnex Planted +
RO/DI water from local water store
Remineralizer: MK-BREED Blue Diamond
Fauna: CBS, BKK, BKK mischlings, horned nerite snail
PH: 6.4 - 6.6
Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: 0 ppm
TDS: 170 ppm
Temp: 73 - 75
Food: Hikari Shrimp Cuisine, Snowflakes, Ken Calcium Sticks
Flame moss and mini xmas moss is slowly thriving without a problem for me but the floaters aren't doing well. The roots aren't developing and the leaves keep melting away so the growth is so minimal.
I have attached some photos so you guys can see what this weird development is on my wood and walls... Sorry the tank shot got uploaded upside down for some reason..