12/16mm External CO2 Diffuser & Reactor

Enhance Your Aquarium's Growth with Precision CO2 Diffusion

Unlock the full potential of your planted aquarium with our 12/16mm External CO2 Diffuser & Reactor. Designed to deliver optimal carbon dioxide levels, this all-in-one solution ensures your aquatic plants receive the CO2 they need for vibrant growth and health. Whether you're a beginner or an experienced aquarist, this CO2 diffuser will take your aquarium to the next level, creating a lush, thriving underwater ecosystem.

Key Features

Our CO2 diffuser is packed with features that make it an essential tool for any planted tank:

High-Quality Materials: Crafted from durable aluminum alloy and glass, ensuring long-lasting performance.
Integrated Bubble Counter: Built-in bubble counter allows for precise CO2 measurement, ensuring your plants receive the exact amount they need.
Check Valve Function: Prevents water from backflowing into your CO2 system, adding an extra layer of protection.
Space-Saving Design: Compact and lightweight, this diffuser seamlessly integrates into your setup without taking up valuable space.
Efficient CO2 Dissolution: Ensures CO2 is effectively dissolved and distributed throughout the aquarium, reaching every corner for maximum plant absorption.
Multiple Sizes Available: Compatible with 12/16mm or 16/22mm pipe diameters, making it versatile for various tank setups.

Why Choose Our CO2 Diffuser?

This CO2 diffuser is more than just a simple accessory; it's a game-changer for your aquarium. By delivering precise amounts of CO2 directly to your plants, it promotes stronger root systems, greener foliage, and faster growth. The integrated bubble counter takes the guesswork out of CO2 dosing, while the check valve function protects your equipment from potential damage. Whether you're cultivating a delicate carpet of aquatic plants or maintaining a vibrant coral reef, this diffuser will enhance the beauty and health of your tank.

Perfect for Planted Aquariums and Coral Reef Tanks

Our diffuser is ideal for both freshwater planted tanks and saltwater coral reef tanks. In freshwater setups, it ensures your plants receive the CO2 they need for photosynthesis, resulting in lush, green growth. In coral reef tanks, it helps maintain optimal CO2 levels, supporting the overall health of your corals. The compact design allows it to fit seamlessly into your existing setup, making it a versatile choice for any aquarist.

Experience the Difference Today

Don't let your plants struggle to grow—provide them with the CO2 they need to thrive. Order our 12/16mm External CO2 Diffuser & Reactor today and watch your aquarium transform into a lush, vibrant paradise. Your aquatic plants and corals will thank you!

(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.

Note:

(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

for more information please visit our Shipping Policy page.

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

for more information please visit our Return Policy page.

Sizing & Fit Guide

Please be aware that most of our clothing is Juniors' sizing, which runs smaller than regular US / European Women sizing. Refer to the measurements chart for each individual product to determine the best size for you. Product specific size chart and information can be found in product description or in product picture gallery.

Our team does it's best to include accurate size details and measurement of each item in the product descriptions. If you have questions regarding sizing or any other information on a specific item, please email us at support@Trendha.com for specific details.

Find the best size

When comparing your measurements to those listed on the site, make sure to check if the fabric is stretchy or not. If it is, it can stretch an inch or more.

Bust: Wrap the measuring tape loosely around the fullest part of your bust to ensure a comfortable fit.
Waist: Measure the narrowest part of your natural waist, holding the measuring tape loose enough to fit comfortably.
Hips: Drape the measuring tape around the widest part of your hips, resting the tape comfortably against your body.
Length: For tops and dresses, measure from the top of your shoulder to the hem. For strapless dresses, measure from the highest part of the neckline to the hem. For pants and skirts, measure from the top of the waist to the hem.
Sleeve: With your arm outstretched, measure from the base of your neck to the end of the sleeve hem to determine where the sleeve length will fall on you.

Size Chart

Dresses Tops Bottoms Denim Swimwear Shoes

Dresses Size Chart

Dress Size Chart (Inch)

DRESSES SIZE IN INCHES
SIZE	US / CAN	BUST	WAIST	HIPS
XS	0	31"-32"	24"-25"	34"-35"
S	2-4	33"-34"	26"-27"	36"-37"
M	6-8	35"-36"	28"-29"	38"-39"
L	10-12	37"-39"	30"-32"	40"-42"
XL	14	40"-42"	33"-35"	43"-45"

Dress Size Chart (cm)

DRESSES SIZE IN CM
SIZE	US / CAN	BUST	WAIST	HIPS
XS	0	78.7-81.2	60.9-63.5	86.3-88.9
S	2-4	83.8-86.3	66-68.5	91.4-93.9
M	6-8	88.9-91.4	71.1-73.6	96.5-99
L	10-12	93.9-99	76.2-81.2	101.6-106.6
XL	14	101.6-106.6	81.2-88.9	109.2-114.3

Tops Size Chart

Tops Size Chart (Inch)

TOPS SIZE IN INCHES
SIZE	US / CAN	BUST	WAIST
XS	0	31"-32"	24"-25"
S	2-4	33"-34"	26"-27"
M	6-8	35"-36"	28"-29"
L	10-12	37"-39"	30"-32"
XL	14	40"-42"	33"-35"

Tops Size Chart (cm)

TOPS SIZE IN CM
SIZE	US / CAN	BUST	WAIST
XS	0	78.7-81.2	60.9-63.5
S	2-4	83.8-86.3	66-68.5
M	6-8	88.9-91.4	71.1-73.6
L	10-12	93.9-99	76.2-81.2
XL	14	101.6-106.6	83.8-88.9

Bottoms Size Chart

Bottoms Size Chart (Inch)

BOTTOMS SIZE IN INCHES
SIZE	US / CAN	WAIST	HIPS
XS	0	24"-25"	34"-35"
S	2-4	26"-27"	36"-37"
M	6-8	28"-29"	38"-39"
L	10-12	30"-32"	40"-42"
XL	14	33"-35"	43"-45"

Bottoms Size Chart (cm)

BOTTOMS SIZE IN CM
SIZE	US / CAN	WAIST	HIPS
XS	0	60.9-63.5	86.3-88.9
S	2-4	66-68.5	91.4-93.9
M	6-8	71.1-73.6	96.4-93.9
L	10-12	76.2-81.2	101.6-106.6
XL	14	83.8-88.9	109.2-114.3

Denim Size Chart

Denim Size Chart (Inch)

DENIM SIZE IN INCHES
WAIST SIZE	JUNIOR SIZING	WAIST	LOW WAIST	HIPS
24	0	24"-25"	26"-27"	32"-33"
25	1	25"-26"	28"-29"	33"-34"
26	3	26"-27"	30"-31"	34"-35"
27	5	27"-28"	31"-32"	35"-36"
28	7	28"-29"	32"-33"	36"-37"
29	9	29"-30"	33"-34"	37"-38"
30	11	30"-31"	34"-35"	38"-39"
31	13	31"-3"	35"-36"	39"-40"
32	15	32"-33"	36"-37"	40"-41"

Denim Size Chart (cm)

DENIM SIZE IN CM
WAIST SIZE	JUNIOR SIZING	WAIST	LOW WAIST	HIPS
24	0	60.9-63.5	66-68.5	81.2-83.8
25	1	63.5-66	71.1-73.6	83.8-86.3
26	3	66-68.5	76.2-78.7	86.3-88.9
27	5	68.5-71.1	78.7-81.2	88.9-91.4
28	7	71.1-73.6	81.2-83.8	91.4-93.9
29	9	73.6-76.2	83.8-86.3	93.9-96.5
30	11	76.2-78.7	86.3-88.9	96.5-99
31	13	78.7-81.2	88.9-91.4	99-101.6
32	15	81.2-83.8	91.4-93.9	101.6-104.1

Swimwear Size Chart

Swimwear Size Chart (Inch)

SWIMWEAR SIZE IN INCHES
SIZE	US / CAN	BUST	WAIST	HIPS
XS	0	31"-32"	24"-25"	33"-34"
S	2	33"-34"	26"-27"	35"-37"
M	4	35"-36"	28"-29"	37"-38"
L	6	37"-39"	30"-32"	39"-41"
XL	8	40"-42"	33"-35"	42"-44"

Swimwear Size Chart (cm)

SWIMWEAR SIZE IN CM
SIZE	US / CAN	BUST	WAIST	HIPS
XS	0	78.7-81.2	60.9-63.5	83.8-86.3
S	2	83.8-86.3	66-68.5	88.9-93.9
M	4	88.9-91.4	71.1-73.6	93.9-96.5
L	6	93.9-99	76.2-81.2	99-104.1
XL	8	101.6-106.6	81.2-88.9	106.6-111.7

Shoes Size Chart

US	EURO	UK	AUS	JAPAN	CHINA
5	35-36	3	3.5	21.5	35
5.5	36	3.5	4	22	35.5
6	36-37	4	4.5	22.5	36
6.5	37	4.5	5	23	36.5
7	37-38	5	5.5	23.5	37
7.5	38	5.5	6	24	37.5
8	38-39	6	6.5	24.5	38
8.5	39	6.5	7	25	38.5
9	39-40	7	7.5	25.5	39
9.5	40	7.5	8	26	39.5
10	40-41	8	8.5	26.5	40
11	41-42	9	9.5	27.5	41

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

NOTE:

All models are wearing size small in tops and dresses, and size 1, 3, or 5 in jeans depending on their body type.
Most kalles jeans & dresses have some stretch, please refer to product description for fabric details.
Most kalles bottoms have an inseam of 31-34” depending on the cut and style. Sizing may vary depending on cut and style.