has anyone used pargro quick drain rockwool cubes?

tree king

Well-Known Member
Hey homebrewer are you using the B'CUZZ blocks? I'm using the Grodan as well and my blocks have been wet for 4 days under my 1K hps. It looked like that 's what you're using when i was following the GH vs DG thread? If so i'm guessing they must be different forms of RW? You said that yours will dry out in a day with no plant, mine would probly stay wet for a week under no light. Curious to know what the differences are.
good question i want to know this too homebrewer because if i can find a different rockwool that drains faster than i could probably still use it
 

homebrewer

Well-Known Member
Hey homebrewer are you using the B'CUZZ blocks? I'm using the Grodan as well and my blocks have been wet for 4 days under my 1K hps. It looked like that 's what you're using when i was following the GH vs DG thread? If so i'm guessing they must be different forms of RW? You said that yours will dry out in a day with no plant, mine would probly stay wet for a week under no light. Curious to know what the differences are.
I do believe I use B'Cuzz rockwool blocks. Maybe there is a difference between the brands? The local hydro store that I prefer carries this particular brand so that's what I've been using.
 

tree king

Well-Known Member
homebrewer your 100% sure right? it sounds like you were second guessing yourself for a minute. i just wanna make sure i buy the right ones so another crop doesnt get destroyed you know
 

nicedreamz

Well-Known Member
I do believe I use B'Cuzz rockwool blocks. Maybe there is a difference between the brands? The local hydro store that I prefer carries this particular brand so that's what I've been using.
Glad i'm learning this now. I'm trying to copy your set up, but with the addition of a coco mat . This could be a problem for me, i wonder if i can add the Bcuzz blocks under the Grodan and remove the mat? I was just testing the flood and drain to see how it works and now have slimee shiz on the filter of my pump, it breaks up real dusty looking. I didn't rinse as i was told there was no need,. I'm pretty sure it's from the mat and not the pro-tect or grow. What are your thoughts on this?
 

nicedreamz

Well-Known Member
homebrewer your 100% sure right? it sounds like you were second guessing yourself for a minute. i just wanna make sure i buy the right ones so another crop doesnt get destroyed you know
Take a look at homebrewers Dyna-grow vs GH dumpster thread, there's a pic on the first page.
 

homebrewer

Well-Known Member
homebrewer your 100% sure right? it sounds like you were second guessing yourself for a minute. i just wanna make sure i buy the right ones so another crop doesnt get destroyed you know
I just checked, definitely BCUZZ.

Glad i'm learning this now. I'm trying to copy your set up, but with the addition of a coco mat . This could be a problem for me, i wonder if i can add the Bcuzz blocks under the Grodan and remove the mat? I was just testing the flood and drain to see how it works and now have slimee shiz on the filter of my pump, it breaks up real dusty looking. I didn't rinse as i was told there was no need,. I'm pretty sure it's from the mat and not the pro-tect or grow. What are your thoughts on this?
Are you saying that you suspect your growing medium of contributing a slime to your filter and pump? I've never had that issue actually though I always soak and wash my rockwool before plants are planted into them. I've never used a coco mat so maybe that is the issue? Maybe some h2o2 is needed.
 

nicedreamz

Well-Known Member
I just checked, definitely BCUZZ.

Are you saying that you suspect your growing medium of contributing a slime to your filter and pump? I've never had that issue actually though I always soak and wash my rockwool before plants are planted into them. I've never used a coco mat so maybe that is the issue? Maybe some h2o2 is needed.
Yes the mat i believe. I have used grodan several times but as a top feed, also i haven't been flooding yet. The clones are very small so i'm just feeding from the top.
When i tried the flood test it was mat only, no rockwool cubes on the table at that time. If your cubes dry out in a day i want those. I'm thinking maybe of adding those under the Grodans and removing the mat. If i'm flooding can i get away with stacking blocks? I always rinse my RW and soak at 5.5
 

tree king

Well-Known Member
I just checked, definitely BCUZZ.

Are you saying that you suspect your growing medium of contributing a slime to your filter and pump? I've never had that issue actually though I always soak and wash my rockwool before plants are planted into them. I've never used a coco mat so maybe that is the issue? Maybe some h2o2 is needed.
thanks homebrewer. wow you use the 6" cubes too and they get bone dry in 1 day? if they were grodan they would still have water in them 2 weeks later lol. that seems impossible but maybe it really is just the difference in the companies. im curious to know how much weight is lost in the cube in a 24 hour period if you put it on the scale but i guess i wont know exactly until i do it my self. i tried doing searches on a few different websites about these b'cuzz cubes but theres no info on them. if anyone else is using them could you explain your experiences.

i also wanted to point out that this is actually possible because i noticed the rapid rooter plugs dry out way too quick for me so i use the sunleaves super starter plugs instead and there so much easier for me to use cause they hold water longer and there both the same type of coco right?
 

nicedreamz

Well-Known Member
I just checked, definitely BCUZZ.

Are you in the states? I've never seen those kind of blocks at any of the hydro stores around here (Bay Area) Got a link to a store i can order? When i google B'cuzz rockwool blocks not seing any hydro sites coming up.
 

tree king

Well-Known Member
I just checked, definitely BCUZZ.

Are you in the states? I've never seen those kind of blocks at any of the hydro stores around here (Bay Area) Got a link to a store i can order? When i google B'cuzz rockwool blocks not seing any hydro sites coming up.
i found this spot
http://www.nehydro.com/products/Bcuzz-Roxx-6-Cube-Strip---4-x-4-x-4-wand-Hole.html

im gonna buy some b'cuzz cubes with the hole. do you guys think i can use perlite to fill in the holes when transplanting from the aero cloner?
 

homebrewer

Well-Known Member
thanks homebrewer. wow you use the 6" cubes too and they get bone dry in 1 day? if they were grodan they would still have water in them 2 weeks later lol. that seems impossible but maybe it really is just the difference in the companies. im curious to know how much weight is lost in the cube in a 24 hour period if you put it on the scale but i guess i wont know exactly until i do it my self. i tried doing searches on a few different websites about these b'cuzz cubes but theres no info on them. if anyone else is using them could you explain your experiences.

i also wanted to point out that this is actually possible because i noticed the rapid rooter plugs dry out way too quick for me so i use the sunleaves super starter plugs instead and there so much easier for me to use cause they hold water longer and there both the same type of coco right?
An empty block wont get bone dry in 24 hours but it will get dry and light. I have lots of airflow and a commercial grade dehumidifier in my garden and with my environment, rockwool blocks need flooded 3 times per day in flower or they will get bone dry. As another poster stated, it should not be an issue to flood these blocks a couple of times in flower while the lights are on. Just as a comparison, my dirt pots which use 3 gallons of promix will easily dry out in 3 days.
 

nicedreamz

Well-Known Member
An empty block wont get bone dry in 24 hours but it will get dry and light. I have lots of airflow and a commercial grade dehumidifier in my garden and with my environment, rockwool blocks need flooded 3 times per day in flower or they will get bone dry. As another poster stated, it should not be an issue to flood these blocks a couple of times in flower while the lights are on. Just as a comparison, my dirt pots which use 3 gallons of promix will easily dry out in 3 days.
What are you using for exhuast and intake? I only use exhuast that turns on once every couple of hours to move the old air out.
 

nicedreamz

Well-Known Member
i found this spot
http://www.nehydro.com/products/Bcuzz-Roxx-6-Cube-Strip---4-x-4-x-4-wand-Hole.html

im gonna buy some b'cuzz cubes with the hole. do you guys think i can use perlite to fill in the holes when transplanting from the aero cloner?
Cool thanks for the link, i also found this one when i put in "atam B'cuzz roxx"
http://forestvillehydro.com/products-page/grow-media/rockwoolstonewool/

These look just like homebrewers in the 6 inch. Not sure about the perlite in the hole thing? Wouldn't you place the clone in the hole?
 

dadio161

Well-Known Member
I use the 6" Grodan blocks and I get the same results like Homebrewer. As HB stated before , make sure that your tray drains completely . No standing water after it drains. Rockwool has never failed me . It's easier to keep the room clean and I have not had any spider mites in 4 consecutive harvests now.
 

nicedreamz

Well-Known Member
I use the 6" Grodan blocks and I get the same results like Homebrewer. As HB stated before , make sure that your tray drains completely . No standing water after it drains. Rockwool has never failed me . It's easier to keep the room clean and I have not had any spider mites in 4 consecutive harvests now.
How often are you watering? Do you slice an X on the bottom as mentioned earlier in the thread?
 

tree king

Well-Known Member
I use the 6" Grodan blocks and I get the same results like Homebrewer. As HB stated before , make sure that your tray drains completely . No standing water after it drains. Rockwool has never failed me . It's easier to keep the room clean and I have not had any spider mites in 4 consecutive harvests now.
same results meaning what exactly? are you trying to say that 6" grodan cubes are mostly dried out in 24 hours? cause i know that doesnt happen. i know your having good grow results but please explain how quickly they dry out
 

homebrewer

Well-Known Member
What are you using for exhuast and intake? I only use exhuast that turns on once every couple of hours to move the old air out.
It's an open room with 600+ cfm exhaust fan? I can't remember, had the thing for years. It pulls air through a few lights and a carbon filter, then dumps it outside.
 

dadio161

Well-Known Member
I water my girls once a day for 15 minutes when I start to veg. I then water twice a day when I change the lights to 12/12. After a few weeks , the blocks starts to feel light and then bump to three times a day. That should do it until harvest. I also keep two fans blowing gently 24/7. Don't feel a need to slice an "X" on the bottom.

same results meaning what exactly? are you trying to say that 6" grodan cubes are mostly dried out in 24 hours? cause i know that doesnt happen. i know your having good grow results but please explain how quickly they dry out
 
I was told that there are 3 different kinds (densities) of Grodan and they are labeled Delta, Classic, and one other inbetween the two. Apparently the Classic which is usually the slabs drains quicker where as the Delta which are usually the blocks hold more water... this would make sense if you are starting in a block then setting that block on a slab, you would want the slab to drain quicker. This is what I was told and was wondering if anyone could confirm this info?
 
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