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omard · 04-01-2008, 08:14 AM

Save yourself PH head problems...

Check out:

SCWD—Squid—Wavemaker

The SCWD (pronounced "squid") Wavemaker is a revolutionary device designed to provide alternating currents without the use of electricty. The SCWD mounts inline with 3/4" tubing, the two ports alternate the output, the bottom port is the input. A great alternative to expensive electronic ball valves. The SCWD will run on any pump with a minimum output of 50 GPH and a maximum output of 1400. The switching speed and current duration is dependent on the volume of water flowing through the SCWD. You can control the duration by controlling the flow going through the SCWD. Can be submersed for use with large power heads or used externally. Provides alternating current between two ports. connects to any pump up to 1400 GPH with 3/4" vinyl tubing.

Works great in my 125 gal. Can supplement with a small koralia PH to get at any low flow areas...

I have used for years. They do appear to wear out over time...My first lasted 5 years.

Can be modded to increase flow.

Love mine.

Scott

04-01-2008, 08:14 AM	#2 (permalink)
omard Gnarly Old Codfish Join Date: Sep 2003 Location: Silverdale, Washington Age: 59 Posts: 4,788 Blog Entries: 25 Karma: 4554	Save yourself PH head problems... Check out: SCWD—Squid—Wavemaker The SCWD (pronounced "squid") Wavemaker is a revolutionary device designed to provide alternating currents without the use of electricty. The SCWD mounts inline with 3/4" tubing, the two ports alternate the output, the bottom port is the input. A great alternative to expensive electronic ball valves. The SCWD will run on any pump with a minimum output of 50 GPH and a maximum output of 1400. The switching speed and current duration is dependent on the volume of water flowing through the SCWD. You can control the duration by controlling the flow going through the SCWD. Can be submersed for use with large power heads or used externally. Provides alternating current between two ports. connects to any pump up to 1400 GPH with 3/4" vinyl tubing. Works great in my 125 gal. Can supplement with a small koralia PH to get at any low flow areas... I have used for years. They do appear to wear out over time...My first lasted 5 years. Can be modded to increase flow. Love mine. Scott _________ AG "125," AquaC EV 180, 30 gal sump, "SCWD", 80 lbs LR, CoralSeaLife "Moonlite" Hood, PFO 250W HQI Mini-Pendant (SPS HQI 14000k bulb) 12 Gallon NanoCube - 24w stock PC 50/50 light "...nothing good ever happens fast in a reef tank, only bad things happen fast..." - MIKE PALLETTA - (2008 Reef log) ("OmarD"/"Scott")