BayShrimp 10 SS Grade CRS Crystal Red Shrimp Live Freshwater Aquarium Shrimp - 1/4 to 1/2 Inches Long. FRESHWATER TANK CONDITIONS: pH 6.0 - 6.4 gH 4 - 6 kH 0 - 1 TDS 120 - 150 Temperature 72 – 78. Shrimps are very sensitive to change when it comes to water in your tanks and any immediate change can cause causality. Once they are in your possessions, it is your responsibility to make sure your water parameter with our tank water parameter (we recommend to have water test kit ready at all time) and please keeping the whole bag of the shrimp directly to your tank for 2 hours before you can carefully use the scissor cut the bag inside the tank that allows the shrimps themselves move out the bag to your tank. SHIPPING: We’re currently shipping out the shrimps on Monday, Tuesday and Saturday because it will eliminate the chance of the package will spend overnight at the warehouse, therefore increase the chance of them arrival healthy significantly. LIVE GUARANTEE POLICY: Every package bought from us are covered under our Live Guarantee Arrival Policy. In the event of any animal dead on arrival, please follow these steps to submit your claim: Take 3 clear pics of dead animal in the un-opened bag next to shipping label. Email us with clear descriptions what happen to the package to help us diagnose the problem. Allow us up to 48 hours to process with the claim. Once the claim is approved, a refund will be sent to you based on the number of shrimps (less than 10). Please note, in these circumstances, our Live Guarantee policy will be voided: The wrong shipment address (We ship to your address on your Amazon profile), the package is lost by package theft (please contact local USPS to file a claim), and package is left outside for extended period of time during the extreme weather.