TUNAI SUNSUN Phosphate Remove Infused Media Filter Pad (Pack of 2) | Suitable for HW-303A&B | Eliminate Phosphates from Aquarium Water (Light Green, HW-303A and HW-304B)

SUNSUN Nitrate Remove Infused Media Filter Pad (Pack of 2) | Suitable for HW-302 | Removes Nitrates Safely from Aquarium Water (Dark Grey, HW-302)

SUNSUN Nitrite/Nitrate Pad - Self Cut Filter Pad (Pack of 2) | Suitable for HW-302 | Help to Remove Nitrate/Nitrite from Aquarium Water (Light Grey, HW-302)

SUNSUN Ammonia Remove Infused Media Filter Pad (Pack of 2) | Suitable for HW-302 | Maintains a Safe and Healthy Aquatic Environment (Light Brown, HW-302)

SUNSUN Carbon Infused Media Filter Pad (Pack of 2) | Suitable for HW-302 | Improves Aquarium Water Clarity and Quality (Black, HW-302)