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Ships within 48 hours · Estimated delivery Jun 29 - Jul 4
For Your Every Summer RSVP, with Code: SUMMER15
Description
Grotek Cal-MaxGROTEK CAL MAX Provides added calcium, magnesium and iron NPK: 2 0 0 Cal Max was developed to provide the additional calcium, magnesium and iron needed to support peak production in hydroponic growing. Cal Max can be used to treat problems when they surface and it can also be used as a preventative supplement to your nutrient program to avoid deficiencies such as tip burn in lettuce and blossom end rot in tomatoes. Works to charge soilless media and


Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1514 reviews
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Product Reviews
★★★★★ 5
So beautiful!
Size: 42inch Tall (NOT included wood planks), Color: Black, Size: 42inch Tall (NOT included wood planks), Color: Black
The poles are very sturdy. The order doesn’t come with wood but I only spent ~$15-20 on the wood and stain needed to shelve the poles. The only complaint I have is it was hard to install; mostly due to my lack of experience. It took most of the day to install and stain and cute the shelves. The poles weren’t completely flush to the wall and I couldn’t figure it out for the life of me. I love the way these turned out and I know these shelves will be coming with me to the next home I have. 10/10 would recommend, even with the hard installation. SO worth it.
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Reviewed in the United States on July 26, 2019
★★★★★ 5
Stable and easy to assemble
I used these to support a heavy piece of countertop would to create a side table. Looks great and holds steady.
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Reviewed in the United States on February 15, 2023
★★★★★ 5
Great
All pieces cut to perfection, went together perfectly
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Reviewed in the United States on October 22, 2023
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
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Reviewed in the United States on July 5, 2024
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025




