The Grow Awards 2026 🏆

Back to Grow Questions

What Ph should I water my Autos at? Considering this substrate and the previous problems I had with it ?

Isle_of_Weedstarted grow question 4y ago

I grow in this substrate, is it considered soil or coco ? What Ph should I water it at ? Had loads of problems in first grow with nutes due to over feeding which lowered my run off Ph to 4.7 and gave me problems. This time I will go slow with those but at what Ph? 🙏

Isle_of_Weed

Open

Setup. Substrates

Feeding. Chemical composition

likes

Answer

Fruitgroweranswered grow question 4y ago

I would water between ph 5.5 and 6. I would also use a different soil to start them off in as this one's quite heavily fertilised and could burn your seedling🌱👍

1 like

Complain

Robertsanswered grow question 4y ago

5.8 vegging, 6.2, 6.3 flowering. Best If ph going in matches ph comming out in run off. You should not have any over watering issues either. Coco and perlite hold air.

1 like

Complain

Similar Grow Questions

Solved

BioBizz vs Plagron Which one do you think is better for a plant during flowering? BioBloom NPK 2-7-4, would give it together with fishmix AlgaBloom NPK 3-2-5, would feed only with it

Feeding. Schedule

Feeding. Chemical composition

6y ago

1

1

Solved

Nutrition?Start of flower? What nutrients should I start feeding?

Feeding. Chemical composition

5y ago

2

2

Solved

Can I put Sodium Carbonate tabs in my DWC in order to soften the water?I bought GHE soft water by mistake, what is my best option for now? Can I put Sodium Carbonate tabs in my DWC in order to soften the water? Use the soft water formula on hard water or throw Sodium Carbonate into the mixture

Other. General questions

Feeding. Chemical composition

Feeding. Other

5y ago

1

1

Solved

Feeding for Hydroponics What’s the preferable range for PPM?

Feeding. Chemical composition

6y ago

1

Solved

Capa superior substrato se seca muy rapido (Exterior)La superficie del substrato se me está secando muy rápidamente al sacarlas al exterior ¿Que me recomendáis para colocar encima? ¿Arcilla expandida (Arlita)? ¿Paja? ¿Otra cosa? Gracias!

Setup. Substrates

3y ago

1

2

Solved

Transplant into different grow medium midway through grow?Can I transplant into a better grow medium midway through the grow. Coming up to 4 weeks and still in vegetative state.

Other. General questions

Setup. Strain - Autoflowering

Setup. Substrates

4y ago

2

Solved

Hormone . Pure Do you have any suggestions regarding cytokinin hormone and IBA administration?

Feeding. Chemical composition

3mo ago

10

4

Solved

Nutrients alternativ a friend wants to start with his first plant. Unfortunately, he doesn't have much budget. And through the Corona eruption, he has to work with what he has. As soon as he has the money, he absolutely wants to switch to the right additives. Is it possible to use one of these.

Feeding. Chemical composition

6y ago

1

Solved

Soil recommendation? Typically use Fox Farms Happy Frog but price keeps going up and quality seems much lower, lots of sticks, not mixed well etc Is there any soil recommendations anyone can make that are good but a less pricey? Dont get me wrong, I love Fox Farm’s, and 38/bag isnt terrible. I’m just curious if anyone has found a more mainstream soil that’s as good of soil. I also think their quality has been worse lately

Setup. Substrates

3y ago

4

4

Solved

Tell me what from the line of Advanced Nutrients caused such a precipitate?Tell me what from the line of Advanced Nutrients caused such a precipitate and foam? all the IVS and pump are clogged! The solution was added Connoisseur Grow, Sensi Cal Mag Xtra, B-52, Tarantula, Sensizym, Rhino Skin

Feeding. Chemical composition

5y ago

3

4

Solved

How much do you feed them extra-PK with Biotabs ?I use Biotabs : Mycotrex, Bactrex, Orgatrex, Startrex with a light mix soil and light water (0.08 to 0.1 ec). Some people told me I shouldn't put much PK 5-8 because they easily burn. How much and how often would you feed them PK ? I use blumats with plain water in 6.5L pots, thx

Feeding. Chemical composition

3y ago

2

3

Solved

cultivoexterior

Fertilizante para crecimiento exterior?Qué fertilizantes me recomiendan para la etapa de crecimiento? He sembrado en tierra normal (la de las macetas) y cuando crezca la transplantaré al huerto (es tierra arcillosa pero la he preparado con humus de lombriz y con tierra de cultivo) he comprado fertilizante Bio Vega.

Setup. Outdoor

Feeding. Chemical composition

3y ago

4

Solved

How do stop or slow down coco coir pH from rising?I'm struggling to keep the pH of my coco coir/pumice mix from rising. I always use ph down to get nutrient going in at 5.5, and the run off water is always 6.5+, and leaves start yellowing/dying when pH reaches 6.8. It doesn't swing, always up.

Feeding. Chemical composition

6y ago

2

3

Solved

PhUp P.Hydro vs. P.Carb vs. Both Potassium Hydroxide Vs. Potassium Carbonate : or Both for PH+ up. Does one have lower EC value in solution when used? Does ones have better stability in solution for hydro or soil? Does one have more reactivity with other elements in the grow? Does one have higher PH? Cheers,

Other. General questions

Plant. Other

Setup. Substrates

3y ago

4

1

Solved

White mold I'm getting white mold in my soil. What do I do??!

Setup. Substrates

3y ago

4

7

Solved

Fish fertilizer?Just added 5-1-1 fish fertilizer, one table spoon ish in a 17 ounce bottle? 10 fl ounces in 5.5 gallon pot and 7 in the other one. Does that seem alright ?

Feeding. Chemical composition

6y ago

2

1

Solved

Rock wool cubes Hi everyone this is my first grow and I’m not the most clued up lol. Any advice appreciated. I started in 1.5” then 3” rock wool cubes. I’m currently in week 4 , I plan to start flower at week 6 so Iv just transplanted into 6” cubes to see it right through. Will this be okay?

Setup. Substrates

4y ago

2

Solved

I used a three gallon pot and filled it, with moist soil, to around 70% capacity. Would this soil be enough for a single Royal Gorilla Auto or Should I add more soil? If the answer is positive then how should I go about it? Any help is greatly appreciated since I am a total noob.

Plant. Other

Roots. Other

Setup. Substrates

4y ago

4

2

Solved

pH irrigation / runoff Why is the pH of the runoff so much higher than the pH of the irrigation water? Is the runoff or the irrigation water more important to consider? Canna Terra Professional Plus and BioBizz pH- The pH lowering effect seems to vanish in the fertilizer solution after one to two days

Feeding. Chemical composition

1y ago

5

4

Solved

Presoak soil?Should I presoak my Special mix soil from Gold Label? Moving The Girls to their final 11l container.

Setup. Substrates

4y ago

1

3