Dos Si Dos 33 Grow Diary, Strain Review, and Grow Tips

Hi, guys! This is my Dos Si Dos 33 grow diary in which I’ll describe how to grow this amazingly productive and resinous strain week by week. Hopefully, it can also serve as a Dos Si Dos 33 review, as it’ll give you some idea of how this strain smells and what its effects are.

The whole grow cycle took 18 weeks (9 weeks of veg and 9 weeks of flowering), at the end of which my five Dos Si Dos plants brought me a little over a pound (467 g) of perfectly manicured dry bud with a nice fruity, gassy flavor and potent but balanced effects.

A Few Words About My Setup

I have a quite sophisticated indoor grow-op that runs on hydroponics (flow and ebb); the plants’ root balls sit in a Hydroton medium and are flooded with a nutrient solution from a 40-gallon reservoir at regular intervals. This allows them to drink and absorb nutrients and have plenty of time to breathe oxygen between waterings. The trick is to program the timer so that the schedule is just right and doesn’t lead to either overwatering or underwatering.

I also use an AC and a dehumidifier to optimize the temperature and RH in the grow tent. Using air conditioning means no exhaust fan and no air intake, so I need to provide the grow room with carbon dioxide from a CO₂ tank. This makes the whole setup much more expensive, but it allows me to use CO₂ at three times the normal ambient levels – 1200-1300 ppm instead of 400 ppm. Coupled with enough plant food and plenty of light, this leads to bumper harvests.

I used inexpensive LEDs – a Mars, an HLG, and a Bestva – that collectively draw 970W. This is just right for my 8’x8’ grow tent (almost 6 m²). I didn’t like the Bestva, to be honest, but the Mars and the HLG were great.

Started in Rockwool

I planted 9 germinated seeds into small Rockwool plugs. Five of the seeds were Dos Si Dos 33 (Barney’s Farm), and the rest were other autoflowering and photoperiod strains. I use Rockwool plugs because they make it easier to handle seedlings – simply water them and cover them with a humidity dome when necessary. In a few days, I saw the roots appear at the bottom of the plugs and inserted them into the full-size Rockwool cubes. Four of the Dos Si Dos 33 babies were very healthy and the fifth one was a bit runty.

I hand-watered them with a weak nutrient solution, and when they began to overgrow their starter home, I put each Rockwool cube into a 5-gallon bucket filled with Hydroton (expanded clay pebbles).

Long Troubled Veg

I must admit that it took me too much time to adjust the fertigation schedule – the plants grew very slowly in veg and looked flimsy and overwatered, while some of them had discolorations on their lower leaves. It was probably potassium deficiency.

My growing method was basically SOG (because I had 9 plants standing next to each other), but I had to top some of them to keep their height uniform. It was only in week 9 that I decided the plants were big enough for flowering. I’m sure that in better condition, 4 weeks are enough to reach this size.

Dos Si Dos 33 Flowering Time

According to the breeder’s specs, Barney’s Farm Dos Si Dos 33 takes 60-65 days to mature, and mine needed 9 weeks of 12/12 on the dot. As you’ll see in this review, the flowering stage was completely trouble-free compared with veg.

Already after a week of 12/12, Dos Si Dos 33 showed clumps of pistils on tops. Other strains took longer to transition. Even before the budding started, I installed a ScrOG net, or rather, two tiers of nets at different heights. The purpose of the ScrOG was not to tuck the tops under the screen and direct them sideways but to provide support for the canopy in the future, when the buds’ weight puts a strain on the branches and threatens to break them.

My lights were running at 50% power at this point, but I would dial them up all the way to 100% as the buds matured and required more and more energy.

A Word on the Feeding Schedule

I keep it simple when it comes to feeding my babies. My staple nutrient line is the 3-part Flora series by General Hydroponics. It consists of Flora Micro, Flora Grow, and Flora Bloom. The first one is the main source of all essential micronutrients and is used in different concentrations throughout the grow.

The other two contain the nutrients needed for vegetative growth and flowering respectively. You just change their ratios as you move through the life cycle of your plants – more Grow in veg and more Bloom in flower. It’s all quite simple, as the manufacturer provides sample feeding schedules that work okay as a starting point.

Besides these three, I used a CalMag supplement – an absolute must in hydro and coco. However, even that didn’t save me from trouble. In the last weeks leading up to the harvest, some of the upper leaves dried out and got twisted, which is a clear sign of calcium deficiency. I don’t know exactly what happened – I kept the pH at 5.8-5.9, which is within the perfect range in hydroponics.

Hardy and Low-Maintenance Plants

As I said, the Dos Si Dos 33 plants were the first to start flowering, and I saw the first crystals already in the second week of 12/12. In the third week, they more or less stopped stretching, and all I had to do was some defoliation and lollipopping – I pruned those bud sites that were too far down the canopy. It makes no sense to keep them because below a certain level, all you get are popcorns – no weight, no density, and hardly any resin.

The top buds, on the other hand, were fattening up nicely and started to give off an incredibly pleasant smell. I did struggle a little with environmental conditions. I know that once buds begin to bulk up, you should protect them from mold and bud rot by lowering the relative humidity. It took my dehumidifier all it had to bring the RH below 50%.

I also tried decreasing the daytime temperature by a couple of degrees, but it only happened when the weather cooled down. In the end, the day temp and the RH were at the almost ideal levels of 25°C and 40-45%. Despite the less-than-perfect conditions before that, my Dos Si Dos 33 girls stayed healthy and strong. The amount of resin on the flowers and even bigger leaves was insane.

The Dos Si Dos 33 Yield Was Great

The breeder promises yields of up to 800 g/m², and I don’t think it’s an exaggeration if you install something like 1000W HPS per square meter. Of course, I used much less light but still got more than 3 ounces from each Dos Si Dos 33. The final weight from 5 plants was 16.5 oz (467 g).

I harvested them after 9 weeks of 12/12. In week 7, I cut the nutes by more than half to facilitate the fade and did the final flush with pure RO water in the last 3 or 5 days before the harvest. That was enough to get rid of all built-up salts, and as a result, I got a smoke that was clean and smooth.

Smoke Report

The quality of the buds was amazing – they were all flower and almost no leaves, very easy to trim. I dried them for 7-10 days and then put them into jars to cure for another 2 weeks. When cured, they smelled very pungent and tasted like fruit and gas. The high was beautiful – perfectly balanced between head and body, with maybe only a slight Indica dominance. It relaxed me and put me in a happy, euphoric, giggly mood.

Dos Si Dos 33 from Barney's Farm

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Dos Si Dos 33 Grow Tips

I’d like to wrap up my Dos Si Dos 33 strain review with a couple of tips that might come in handy. Avoid growing this weed with other strains, as it’ll probably finish much earlier than the rest. Be on your A-game in veg – this will shave off a couple of weeks from your total growing time – and don’t forget to give the plants enough calcium and magnesium. Other than that, it’ll be a breeze.

That’s it. I hope my Dos Si Dos 33 grow diary will help you achieve the best possible results with this amazing weed strain. Happy growing!

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