Originally Posted by Gti_Leo
sure rated for a skimmer pump, but when you have a skimmer pump and its say a pump rated for 800gph its not actually pulling 800gph of water, its mixing that with air, you are maybe getting 400gph through it, and then tehre are the recirculating skimmers that are fed with a seperate pump and usually recommended at a low rate, for most skimmers rated at a few hundred gallons its recommended around 250gph of flow at most, reason being for better contact time with the actual bubbles so it can actually attract more dissolved organic and pull it out.
there can be a hole debate on the topic of flow rate, but more contact time makes for better absorption of organic compounds. sure a high rate of flow will turn things over but you will not get the same contact time on the algaes or with the bubbles, so wit ha skimmer you may not have the same stable foam head as you may have with a slower rate.
I've used many pumps on many tanks and haven't seen anything like you are saying. I've not seen better growth of algae with slower flow, and I've not seen uneven or lesser skimmate from faster flow.
The reason recirculating skimmers use smaller pumps for feed, is because a larger pump will simply overwhelm and overflow the limited reaction chamber.
Originally Posted by fishmonkey
What kind of lighting is being used for growth? Used to be the CF
bulbs were fine, but are there other options, like an LED
any type of light will grow algae. A curly-Q energy saver bulb is fine. Whatever you feel like spending the money on.