Sureflows are a great deal, but having tried both the modified maxijet route and now having controllable Tunzes, the full adjustbility of the Tunzes (esp. the pulsing action) has lead to better growth and polyp extension in the SPS.
The Sureflows get you 80% there, the Tunzes give you the last 20%. Whether you want to pay the extra cash for the controllability is your decision.
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