I've been using API Nitrazorb for a while to reduce high nitrates (due to high nitrates in tap water). Now trying out Seachem so I don't have to spend 2 hours recharging every week. Just a bit confused about how much I need and how to use it. I have a 250ml bottle. Working out the recommended amounts it looks like I need about 125ml but I struggled to get enough into my filter. Should I take out the sponge too? Didn't want to cause a minI cycle. Also am I even using enough? Reading threads on hear it looks like people are using a much higher ratio than I am...??? Anyone have more experience/advice?