Hi... has anyone used this skimmer with success? I bought it for my Nano tank, but couldn't seem to get it to work. It does not come with a pump. I've tried using a Jebo 600L/H pump, but it hardly produces any bubbles. A few kind reefers told me to go for something stronger, like a 1000L/H capacity. Would like to hear from you guys first before taking that step. Help?