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Forum: Fertilizers and Water Parameters   01-08-2017, 04:42 AM
Replies: 21
Views: 1,444
Posted By rezco
How about dolomite as a GH booster?

How about dolomite as a GH booster?
Forum: Fertilizers and Water Parameters   01-08-2017, 04:39 AM
Replies: 3
Views: 163
Posted By rezco
Phosphates are consumed when other nutrients are...

Phosphates are consumed when other nutrients are not limiting. Start adding nitrates, potassium and some micros and phosphates will go down. In my medium density tank - 10 ppm PO4 goes to 2 ppm in 6...
Forum: Fertilizers and Water Parameters   12-28-2016, 05:17 PM
Replies: 12
Views: 401
Posted By rezco
Ditto on the baking soda. It will increase the KH...

Ditto on the baking soda. It will increase the KH but will also increase the pH. You may then want to add vinegar or citric acid to bring the pH to a more neutral range.

BTW - I think your drop...
Forum: Equipment   12-28-2016, 05:08 PM
Replies: 13
Views: 544
Posted By rezco
There is no problem with the tank at an angle as...

There is no problem with the tank at an angle as long as it is tightly secured to a support so that tank cannot fall over and get damaged. At 20C if the gas pressure is above 800 psi (approx) then...
Forum: DIY   12-16-2016, 04:55 AM
Replies: 17
Views: 696
Posted By rezco
I did make a smaller reactor as a test that...

I did make a smaller reactor as a test that maxed out CO2 levels on discharge at 20ppm-kinda hard to measure with a pH meter. I was going to make a standardized KH solution with bromothymol blue...
Forum: DIY   12-16-2016, 04:44 AM
Replies: 17
Views: 696
Posted By rezco
I described the build a few years ago here:...

I described the build a few years ago here: http://www.plantedtank.net/forums/20-diy/557938-diy-high-efficiency-rg-co2-reactor.html. This design as shown is oversized (I wanted to err on the side of...
Forum: Algae   12-14-2016, 03:27 PM
Replies: 139
Views: 10,231
Posted By rezco
Are you dosing additional potassium ie KSO4? I...

Are you dosing additional potassium ie KSO4? I usually need 10X more potassium than nitrate to keep all the plants healthy and bba down to a minimum.
Forum: Equipment   12-14-2016, 02:14 AM
Replies: 28
Views: 1,164
Posted By rezco
Hey - it looks like its working as its supposed...

Hey - it looks like its working as its supposed to. If there is no visible gas pocket that confirms the CO2 is being absorbed into the water. Time to hook it to your tank setup and let it go. Please...
Forum: Equipment   12-14-2016, 02:08 AM
Replies: 6
Views: 292
Posted By rezco
How big is your tank and how heavily stocked is...

How big is your tank and how heavily stocked is it? Before you get into CO2 you want to make sure you have fertilizer -preferably the dry kind on hand. Carbon dioxide is a nutrient and as plants take...
Forum: Fertilizers and Water Parameters   12-14-2016, 02:03 AM
Replies: 11
Views: 623
Posted By rezco
I don't use EI or PPS-Pro. Instead, I measure...

I don't use EI or PPS-Pro. Instead, I measure nitrate, Kh, Gh and PO4 regularly and dose accordingly. KNO3, KPO4, according to test results. I do not measure potassium but dose 5ppm equivalent daily...
Forum: Equipment   12-14-2016, 01:53 AM
Replies: 27
Views: 1,684
Posted By rezco
I agree with you on the prices you mentioned -...

I agree with you on the prices you mentioned - $100-200 is reasonable. In my defense - my reg+solenoid is five years old (pure generic) and bought from fleabay for $50. So far working flawlessly. I...
Forum: DIY   12-14-2016, 01:43 AM
Replies: 17
Views: 696
Posted By rezco
CO2 Reactor: How do you control CO2 dosing rates

Hi,

This is just general discussion to share some ideas on controlling Co2 injection rates in a Cerges or Grirggs reactor, or any other CO2 reactor design. How much CO2 are you injecting? How do...
Forum: Equipment   12-14-2016, 01:33 AM
Replies: 27
Views: 1,684
Posted By rezco
Exactly. With an unrestricted output on the...

Exactly. With an unrestricted output on the reactor the excess CO2 goes out as large bubbles in case of any malfunction. This has happened a couple of times on my reactor and there was no surge in...
Forum: Equipment   12-13-2016, 11:15 PM
Replies: 27
Views: 1,684
Posted By rezco
While I agree you need precise control if you are...

While I agree you need precise control if you are using a bubbler or diffuser - it is not neccessary for a CO2 reactor and there is no value added from a expensive dual stage reg. Many single stage...
Forum: DIY   12-13-2016, 11:13 PM
Replies: 23
Views: 9,617
Posted By rezco
Yes the float switch works really well but I...

Yes the float switch works really well but I found that when the pump is running the gas is absorbed so fast that there is really no level to detect. If I increase CO2 input to force the water...
Forum: Equipment   12-13-2016, 08:56 PM
Replies: 27
Views: 1,684
Posted By rezco
Like I said cheapo regulator and needle valve -...

Like I said cheapo regulator and needle valve - costs about $50 bucks online. I have had this setup for 3+ years on a 120 gal.
Forum: Equipment   12-10-2016, 09:22 PM
Replies: 27
Views: 1,684
Posted By rezco
Don't waste your money on a $$ regulator. ...

Don't waste your money on a $$ regulator.

If you have a decent CO2 reactor you just need a cheap solenoid/regulator and sequence it with a timer. For example dose for 30 minutes when first turned...
Forum: Equipment   12-10-2016, 09:15 PM
Replies: 28
Views: 1,164
Posted By rezco
I don't think you need a bigger water pump - that...

I don't think you need a bigger water pump - that is not the problem. I have built a 6"x 30" CO2 absorber column and have had it running for 3+ years with a 200 gph pump. This services about 100...
Forum: Fertilizers and Water Parameters   04-15-2016, 03:27 AM
Replies: 17
Views: 1,156
Posted By rezco
120 gallon setup with 50lb CO2 tank - lasts a...

120 gallon setup with 50lb CO2 tank - lasts a full year.
Forum: Fertilizers and Water Parameters   04-15-2016, 03:25 AM
Replies: 11
Views: 836
Posted By rezco
I have seen this on ludwigia when growth stalls....

I have seen this on ludwigia when growth stalls. Double T5s are pretty strong and could easily have lead to macros depletion. You did not say how much ferts you were using, but you can try to add...
Forum: Fertilizers and Water Parameters   04-15-2016, 03:18 AM
Replies: 13
Views: 949
Posted By rezco
I have been checking my nitrates and phosphate...

I have been checking my nitrates and phosphate with test kits and find its the best way to maintain consistent macro levels. Having a test kit will also help you to find the best fertilization ratios...
Forum: Fertilizers and Water Parameters   12-08-2015, 04:40 AM
Replies: 3
Views: 343
Posted By rezco
Invest in a drop checker...bpm reading does not...

Invest in a drop checker...bpm reading does not tell you how much CO2 is in the water. With CO2 and the Satellite Plus light you could start to deplete the nitrogen and potassium in about 2 weeks if...
Forum: Fertilizers and Water Parameters   12-08-2015, 04:32 AM
Replies: 2
Views: 375
Posted By rezco
Ditto on the urea. Its completely unneccessary...

Ditto on the urea. Its completely unneccessary IMHO. Other than that the chemicals you list are compatible with each other (yes, I am a chemist).

I currently use potassium carbonate as a K...
Forum: Fertilizers and Water Parameters   12-08-2015, 04:22 AM
Replies: 11
Views: 718
Posted By rezco
I prefer to test my water for Nitrates,...

I prefer to test my water for Nitrates, phosphate, KH, GH and pH. I then modify the dosing schedule based on results. Anything else you are just shooting in the dark.
Forum: Plants   07-25-2015, 11:34 PM
Replies: 6
Views: 453
Posted By rezco
You have not mentioned potassium, but this looks...

You have not mentioned potassium, but this looks like phosphate deficiency.
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