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Search: Keyword(s): ; Posts Made By: KH2PO4
Forum: Equipment 10-08-2014, 03:21 AM
Replies: 14
Views: 890
Posted By KH2PO4
Tom Barr used to inject O2 (yep pressurized...

Tom Barr used to inject O2 (yep pressurized system).
Now he doesn't, I remember he said there was no benefit.

Be aware that too high O2 can kill fish (Tom had warned about it too).
It's called...
Forum: Fertilizers and Water Parameters 10-05-2014, 06:46 PM
Replies: 5
Views: 244
Posted By KH2PO4
Mix 4.5 grams of 10% Fe-DTPA to make 30 ml...

Mix 4.5 grams of 10% Fe-DTPA to make 30 ml solution.

1 ml = 0.5 PPM Fe for your 8 gal (30 liter) tank.
Forum: General Planted Tank Discussion 10-05-2014, 06:31 PM
Replies: 3
Views: 193
Posted By KH2PO4
No. Although Cu is toxic but plants need Cu, even...

No. Although Cu is toxic but plants need Cu, even shrimp and fish also need some.
The amount in the TNC Trace is still within limit with EI dosing.

If you're very concern about Cu level, here is...
Forum: General Planted Tank Discussion 10-05-2014, 01:43 AM
Replies: 4
Views: 263
Posted By KH2PO4
Your fish species are not very compatible. ...

Your fish species are not very compatible.

IME, Mollies don't thrive without high GH and KH water.
Columnaris hates salt but Mollies love it. I used to treat
Mollies (white spots and fin rot)...
Forum: Equipment 09-29-2014, 01:05 PM
Replies: 4
Views: 277
Posted By KH2PO4
2215 and 2217 share the same shaft and bushing. ...

2215 and 2217 share the same shaft and bushing.
It seems you can only “downgrade” your 2213 by
using 2211 impeller, since they share the same shaft
and bushing.
Forum: Equipment 09-25-2014, 04:46 PM
Replies: 10
Views: 342
Posted By KH2PO4
This guy found out why his Swagelok's check valve...

This guy found out why his Swagelok's check valve didn't work 12 years ago.
I hope he's found the solution by now.
http://fins.actwin.com/aquatic-plants/month.200208/msg00348.html
Forum: Equipment 09-25-2014, 04:28 PM
Replies: 10
Views: 342
Posted By KH2PO4
Some check valves need back pressure to reseal...

Some check valves need back pressure to reseal the opening after it's cracked open.
The higher the cracking pressure, usually the more back pressure is needed to reseal.

Your check valve needs...
Forum: General Planted Tank Discussion 09-23-2014, 08:37 PM
Replies: 19
Views: 529
Posted By KH2PO4
Isn't all the CO2 in our cylinders a by-product...

Isn't all the CO2 in our cylinders a by-product of industrial activities
(petroleum refinery, alcoholic beverage, etc.)? We're just recycling
the waste...
Forum: Fertilizers and Water Parameters 09-23-2014, 08:19 PM
Replies: 8
Views: 358
Posted By KH2PO4
The Ca/Mg ratio asides, API GH test kit goes bad...

The Ca/Mg ratio asides, API GH test kit goes bad fast.
It would report higher and higher GH (and harder to
distinguish the color) overtime as the reagent approaches
the expiration date. I...
Forum: Equipment 09-23-2014, 07:16 PM
Replies: 2
Views: 205
Posted By KH2PO4
In what context? If you mean ones being sold in...

In what context? If you mean ones being sold in aquarium category on the eBay or LFS,
I believe they are the same, just differently labelled.

Give plastic disc (not barrel type) check valves a...
Forum: Equipment 09-19-2014, 04:16 PM
Replies: 39
Views: 1,564
Posted By KH2PO4
Yeah that's why I specifically put that in the...

Yeah that's why I specifically put that in the parentheses.
And no point of more guessing. OK, I'm out until there's more info.
Forum: Equipment 09-19-2014, 04:02 PM
Replies: 39
Views: 1,564
Posted By KH2PO4
Yeah, I didn't believe at first when I saw it....

Yeah, I didn't believe at first when I saw it. But when I read the UKAPS' thread,
someone asked them about that (too small, no protrusion on the back) and
they (CO2Art) insisted it's dual-stage....
Forum: Equipment 09-19-2014, 03:36 PM
Replies: 39
Views: 1,564
Posted By KH2PO4
Yeah the stock needle valve in the cheaper models...

Yeah the stock needle valve in the cheaper models looks the same as
my Azoo's and Aquatec and tons of other regs from China. It's hard to adjust,
hard to turn, too coarse. But it holds.

Anyway...
Forum: Equipment 09-18-2014, 02:06 AM
Replies: 39
Views: 1,564
Posted By KH2PO4
OK, the "point" is I think it's better than...

OK, the "point" is I think it's better than "cheap knockoff from China that doesn't work
worth a flip".

I should have said "Actually it's good enough for me to stop wanting a needle valve ...
Forum: Equipment 09-18-2014, 12:55 AM
Replies: 39
Views: 1,564
Posted By KH2PO4
One thing, I didn't say there was a problem, I...

One thing, I didn't say there was a problem, I just don't like push-connect-fittings.
Forum: Equipment 09-17-2014, 11:17 PM
Replies: 39
Views: 1,564
Posted By KH2PO4
Have you read the (UKAP's) thread to the end? ...

Have you read the (UKAP's) thread to the end?
They seem to know what they're talking about, ie,
dual gauges vs dual stage.

I was interested but put off by the non CGA-320 fitting.

Bump:
...
Forum: Equipment 09-17-2014, 04:07 PM
Replies: 19
Views: 690
Posted By KH2PO4
For some people, the problem is not the cost of...

For some people, the problem is not the cost of CO2 gas (it should not be,
as you have said). It's the hassle to refill or to find a place to swap the
cylinder.
Forum: Equipment 09-17-2014, 03:41 PM
Replies: 19
Views: 690
Posted By KH2PO4
A dual stage if you can afford it. Or you can buy...

A dual stage if you can afford it. Or you can buy a single stage one
and put an inline air regulator after it, making the whole setup
dual stage.

My working pressure is usually at 30 PSI on my...
Forum: Equipment 09-17-2014, 03:04 AM
Replies: 8
Views: 235
Posted By KH2PO4
Buy that expensive Clippard check valve if you...

Buy that expensive Clippard check valve if you want.
But do yourself a favor by putting a cheap disc type check valve before it.
...
Forum: Equipment 09-07-2014, 05:41 PM
Replies: 4
Views: 217
Posted By KH2PO4
I can find just 2 reasons not to use silicone...

I can find just 2 reasons not to use silicone tubings for our CO2 application:

1. You use a push to connect fitting. Silicone tubing is too soft for it to grab firmly.
This is a reason why ADA...
Forum: Equipment 09-01-2014, 02:47 AM
Replies: 16
Views: 572
Posted By KH2PO4
I know we've seen this problem for many many...

I know we've seen this problem for many many years now.
But have you tried a disc type check valve?

http://www.plantedtank.net/forums/showthread.php?t=703914
Forum: Fertilizers and Water Parameters 08-28-2014, 02:08 AM
Replies: 6
Views: 231
Posted By KH2PO4
Too much (iron to be exact). But the amount that...

Too much (iron to be exact). But the amount that gives the clear water
you desire may be not enough for plants. You have to find the balance.
Anyway, a tank using soil based substrate can get...
Forum: Fertilizers and Water Parameters 08-28-2014, 01:46 AM
Replies: 6
Views: 231
Posted By KH2PO4
I believe it's from trace elements (micros) you...

I believe it's from trace elements (micros) you dose.
Forum: Equipment 08-28-2014, 12:52 AM
Replies: 5
Views: 271
Posted By KH2PO4
With my Azoo regulator, every time I change my...

With my Azoo regulator, every time I change my CO2 tank.
The working pressure will initially surge up to a higher level than
what I set it at. The bubble rate will be unstable for a while....
Forum: Equipment 08-26-2014, 02:58 PM
Replies: 18
Views: 750
Posted By KH2PO4
I think a new impeller should fix the issue. Last...

I think a new impeller should fix the issue. Last year I bought a 2213 and
it's noisy unlike my 2217's. I checked the impeller hole and it's not quite round.
And not in the oval shape like what...
Showing results 1 to 25 of 250

 
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