Dutch Passion AutoMazar Grow DWC

Dutch Passion AutoMazar Grow

Dutch Passion AutoMazar Grow

This weeks Dutch Passion AutoMazar grow diary comes from ‘DWCocha’ who is an indoor grower specialising in deep-water-culture (‘DWC’) which is one of the hydroponic techniques proven to give some of the biggest and best results for the self-sufficient cannabis grower.

In the case of Dutch Passion varieties, DWC is one of the best ways to push the genetics to their full potential.  DWCocha grew a freaky AutoMazar which simply did not know when to stop growing, in the end it was harvested 123 days after germination and yielded around 400g of top quality pot.

All the images used in this blog are from the original grow diary published on the Autoflower Network. AutoMazar is one of Dutch Passions best selling automatics and has a reputation for being one of the heaviest yielding auto’s available.

Dutch Passion AutoMazar Grow

Above, Dutch Passion AutoMazar grow.  Branches bow down at the end of flowering and may require supporting.

Rockwool cube

DWCocha used a 20 litre DWC bucket to grow his AutoMazar.  The seedling was germinated in a rockwool cube which was placed in a basket of clay pebbles.  The roots grew down into the 20 litre nutrient reservoir, and as the plant matured the nutrient strength was increased.

At the bottom of the 20 litre DWC bucket was a rubber air diffuser which produces a constant stream of bubbles to oxygenate the roots.  Without the air bubbles the roots would simply rot in the nutrient solution.

Dutch Passion AutoMazar Grow

DWC growers

The most experienced DWC growers will tell you that there are 4 main rules to growing massive cannabis plants/

a)      Use a powerful air pump

In this grow DWCocha used a 30 litre-per-minute air pump which ensured that the root ball grew and filled the 20 litre DWC bucket.  Often DWC kits are sold with smaller, less expensive, 5-10 litre air pumps which are not really capable of delivering the amount of oxygen necessary to push the best plants to their full genetic potential

b)      Check nutrients, pH, once or twice each day

DWC does produce some of the best results you will see, but it also requires a lot of attention from the grower.  The experienced grower knows when nutrient concentration can be increased and by how much.  Many auto growers recommend switching the nutrients from ‘veg’ to ‘bloom’ a week or two after the plants has shown female preflowers.

c)       Check and calibrate your pH and EC meter regularly

‘PH’ is a measure of acidity, many DWC growers prefer to feed their plants at around pH 5.8.  ‘EC’ is a measure of electrical conductivity and is a guide to the nutrient concentration.

Once your meter starts producing inaccurate pH/EC readings it will be your plants that suffer very quickly. Many growers have a spare EC and pH meter which they can use if their main meter fails.    On this grow the maximum EC was 2.4 and the typical EC was 2.2

d)      Use lots of light!

Heavy main bloom dutch passion
Dutch Passion AutoMazar Grow

Above, excellent bud production.  The AutoMazar is shown with a Budweiser can to show the size of the blooms

Canna nutrients

In the grow DWCocha used Canna nutrients, Rhizotonic, cannazym, Aqua veg/flores and pK13/14 bloom boost.  Additionally Advanced Nutrients were used, sensical grow/bloom, carboload, Big Bud and Overdrive.  The grow took place in a Secret Jardin DS120 indoor tent.

Tents are one of the most convenient ways to grow indoors, and this one was 1.2m wide, 1.2m deep and 1.8m tall and they retail for around €150.  The single AutoMazar grown by DWCocha completely filled the tent!

The main light used in the grow was a Grow Northern MS006, this is the same light which Dutch Passion now sell as the ‘HighLite LED’ as a result of the cooperation with GrowNorthern.

Dutch Passion AutoMazar Grow
Dutch Passion AutoMazar Grow


Initially the young AutoMazar was grown under a 90w UFO LED.  DWCocha had some problems in the first 2 weeks at the start of the grow and the AutoMazar only just survived.  Despite the early problems the AutoMazar went on to become one of the biggest we have seen.

It will be comforting for other growers to know that great plants can be produced despite problems in the early stages of growth.  The best seedbanks use genetics selected for performance and toughness.

Dutch Passion AutoMazar Grow
Dutch Passion AutoMazar Grow

Above, AutoMazar before and after the fan leaves were removed.  Harvesting this much pot from a single plant is a home growers dream

Comments from DWCocha

“In DWC AutoMazar took a lot of calcium/magnesium, and was over the maximum recommended dose by the finish.  AutoMazar has a really sweet & smooth flavour and smoke. It’s so easy to smoke it’s more-ish !  I can’t leave it alone but still function fine all day. AutoMazar is a good daytime blaze that makes you smile when you roll … the bag appeal alone, before you light up screams quality & guarantees no disappointments !”

“The crazy size of this plant is for sure down to the genetics, DWC/LED & perfect EC & pH throughout 90% of the grow.  I’m not an expert grower, but I just got lucky with this one.  I realized the potential & made the effort to keep the AutoMazar in the nutrient sweet spot.”

Humidity lower

“Also her near-death experience at a very young age may have released some crazy monster mutant survival gene or something.  I would definitely grow AutoMazar again & wouldn’t change a thing apart from some grower errors along the way!  I would have liked the relative humidity (‘RH’) lower, since 60% RH was typical throughout the grow, soon I will get a dehumidifier.”

“What can I say?  Thanks Dutch Passion for creating some amazing weed.  This was my second ever grow, and I got a result I doubt I’ll be able to beat.  I still can’t quite believe it !  AutoMazar was an absolute pleasure to grow & was well worth the extra grow time given the quality & amount of bud produced!”

A 10/10 score

“I give Dutch Passion AutoMazar a 10/10 score.  388.1g was the final weight after smoking a fair bit & giving away half an ounce ! … it would have been over 400g if I had not smoked a load before the final weigh in”


Dutch Passion AutoMazar Grow

Congratulations to DWCocha on a very special grow, growing plants this large is a rare sight.  Although he could have harvested this plant earlier, DWCocha decided to leave the AutoMazar until he felt that she was at the maximum size. 123 days is an unusually long time for an auto to grow, but here the grower was rewarded with an incredibly large harvest.

It was a remarkable grow and we hope he manages to grow more massive plants in the future!

Dutch Joe

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