1-Site Expansion Kit Is Great For Replacing a Single 13 Gallon Growth Module For Your Under Current XXL13! All Expansion Kits Now include # Multi-Mod Growth Module, Aeration Manifold Fittings, and Air Hose Whips.

NOTE: This multi-mod expansion kit is designed to be used to expand the new 2019 multi-mod under current systems. This expansion kit will NOT work with the classic techniques. If you are looking to expand an old classic under current systems, please call us for more information and pricing.

Under Current 1-Site Expansion Kit for UC XXL13
1 site expansion kits from Current Culture are great for replacing a growth module in a situation where one of the original modules has been damaged or broken in any way. These kits come with all you need to get your Under Current back in working order.

All Current Culture Systems now come with White ABS lids. These new white lids are made of durable ABS plastic, UV stable, 100% non-translucent, and highly reflective. This provides for slightly cooler system operating temperatures and less scale build-up. The black lids previously used have been discontinued and are no longer available.

New Side-Entry Air Ports All Current Culture Under Current system now includes an innovative side-entry for the air diffuser lines utilizing a uni-seal for each module. This allows you to remove the entire module lid without disconnecting the air lines, making root-zone inspection much easier. Replacement Air Diffuser kits are now sold in two options - side entry or top entry. You can easily convert an older UC system with top entry to utilize side entry by purchasing an air diffuser kit and following the included instructions to drill the correct-sized hole into your modules.

XXL13 Expansion Kit Includes:
• (1) 13 Gallon Multi-Mod
• (1) Connecting Joints with UC Spin Tight Bulkhead
• Your Choice of Growth Module Lids:
  • One 8" Net Pot per Growth Module
  • or One 5.5" Net Pot per Growth Module
• (1) Aqua-Pore Air Stone
• It does not include any additional air or water pumps that may be required.

Module Dimensions:

• 8 Gallon Multi-Mod: 16" x 14" x 15"
• 13 Gallon Multi-Mod: 16" x 14" x 23"

Under Current is a deep water culture system with many available configurations. Plant Centers measure from the center of one plant to the center of the next plant and each model includes 8" Net Pots.

• UC models have 18" Plant Centers and 8 gallon Growth Modules
• XL models have 25" Plant Centers and 8 gallon Growth Modules
• XL13 models have 30" Plant Centers and 13 gallon Growth Modules
• XXL13 models have 40" Plant Centers and 13 gallon Growth Modules