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Hydro Logic Small Boy Upgrade Kit, Converts to Stealth RO-100

Item #: HL33010

Hydro Logic
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Small Boy Upgrade Kit, Converts to Stealth RO-100

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Upgrade your Small Boy to a Stealth RO100 and add RO to your system.

With this easy to install upgrade kit you can add RO capacity to your Small Boy System. Check out the Video Tab above to view the intruction video.


  • Membrane housing
  • 100 GPD membrane
  • 750 ml/L flow restrictor
  • (2) membrane clips
  • Stealth RO100 manual
  • Eco waste reducer
  • Tubing and connectors
  • ASO Valve (Automatic Shut Off)

Upgraded Stealth RO100 Features:

  • Save More Water! Less waste than similar filters with a 3:1 ratio
  • Optional 2:1 ration included
  • Stabilize PH levels and avoid mineral build up
  • Maximize nutrient uptake and minimize lock-out for your prized plants
  • Essential for health of beneficial micro-organisms
Learn More about the Stealth RO100


Brand Hydro Logic
SKU HL33010
Weight (lb.) 2.65
Height (in.) 13.25
Width (in.) 3.25
Length (in.) 5.5
Warranty Yes
Free Shipping No

Hydro Logic Small Boy Upgrade Kit, Converts to Stealth RO-100 Videos

Upgrading the Hydro Logic Small Boy to a Stealth RO100

Customer Reviews

Haven't had to adjust the pH since I've got this Review by Todd
This sediment filter works great but it waste a lot water. I'm trying to think of a way to use that water. Hook up to toilet or something. I haven't had to adjust the pH since I've got this. My advice to anyone out there is get the big boy so you don't have to add this on later to the small boy. Costs the same but you will have a bigger unit in the end.

(Posted on March 22, 2016)
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