Still the best power head for powering undergravel filters and running wave maker timers
Approximate pebble size is 1 inch
while rosemary extract is added as a natural preservative
and fading for ten years
and can even be use to have a cooler area in the terrarium for the reptiles and amphibians
HM Digital PH-200 - Water Resistant pH/Temp Meter Professional Series On Sale Still the best power headPH 200: Waterproof Professional Series pH Temp Meter The PH 200 is a professional grade pH Temp meter ideal for all pH testing water. With its advanced microprocessor it provides highly accurate dependable readings in such applications as hydroponics, purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, and