just to add, our AT is in no way directly related to the both chillers also...other than Reef Relief is one of our sponsors....but as long as he keeps to the facts, there is nothing wrong with him promoting the reef relief chillers....
as for the sueing part...maybe the original chiller....whether Reef Relief or Pacific Coo...may not have applied for patent rights, trademarks....so design can be copied without legal problems....but i am sure people in the market can observe which chiller came out first...and from there derive that the similar chillers afterwards are the copies...hehehe