Brew Green Water In A 2ft Tank Options

[HappyBuddha]

why a low KH may cause a pH crash when having green water?

Without sufficient KH, the green water is not bufferred against the natural swing of pH during the course of a day.

[kingyoo]

In basic terms.....

Green water = suspended algae= plant

Plants exchange Oxygen (O2) to Carbon Dioxide (CO2) at night.

CO2 drags the PH down.


A higher KH will grab the PH and hold it steady.

There are other factors that come into play such as the nitrogen cycle. During that process free hydrogen molecules are released. All these free hydrogen molecules causes the water to become acidic, which will test PH very low.

Carbonante activity (sodium bicarbonate) will harness some of the hydrogen molecules and store them to keep the PH stable.


I am not a chemist. These are things that I have learned with keeping goldfish healthy.

[CyberET]

hmm... but the water issn't green yet right? he mentioned cloudy only..
and there issn't a filter yet, i know BB will be present to utilize the buffering capacity, but not much right?

[kingyoo]

Ah, no green water yet. Then maybe because no bio filter to set up the BB (bio bugs?) there could be a problem with the cycle being unstable and causing PH flux. The best thing to do is take readings for PH and see if there is flux. If so then do test for KH.

Otherwise, could it be that there is green water, but not dark enough to tell. Cloudy water is also a sign of too much dissolved organic particles (docs) which will rob the water of oxygen. But with airstone, that shouldn't be a problem.

Maybe toxic water. Too much pollution with no cycle started.

[CyberET]

i don't think hes using filter?
but if the green issn't dark enough to tell.. would it be sufficient to be of any effect?
hmm.. or could it be too high ammonia which is the cause y the green cannot start?

sheringam >> what light temperature r u using?

[The Matrix]

i sense another one making the same mistakes once again.

Sheringham, dun torture your fish leh.

[HappyBuddha]

i sense another one making the same mistakes once again.

Sheringham, dun torture your fish leh.

Unless he hasn't been reading the advise given here, especially the one on lowering his water's depth, the water should turn green pretty soon.

The same words - be patient when cultivating virgin green water.

[sheringam]

i don't think hes using filter?
but if the green issn't dark enough to tell.. would it be sufficient to be of any effect?
hmm.. or could it be too high ammonia which is the cause y the green cannot start?

sheringam >> what light temperature r u using?

i'm not using any filter, only an air stone with 2 x 36W 6000K OSRAM PL lights.

PL lights are more than 10cm away from surface of water. Now reduce to 2~3 cm.

Added 2 spoons of salt in the previous setup. Is that another mistake?

Had drained all the water from the tank and added fresh water without the salt. Not to forget Genesis anti-chlorine which removes chlorine and chloramine as well.

Yes there's too much dissolved organic particles in the water and particles at the bottom of the tank. have might be feeding too much green peas to goldfish.

Added half spoon of sodium carbonate to buffer the KH of the fresh water.

no choice have to use a 2ft tank instead of a tub cos of space constraint.

still learning how to brew green water in a 2ft tank.

[CyberET]

sounds ok.. but whats your stocking level?

[The Matrix]

i'm not using any filter, only an air stone with 2 x 36W 6000K OSRAM PL lights.

PL lights are more than 10cm away from surface of water. Now reduce to 2~3 cm.

Added 2 spoons of salt in the previous setup. Is that another mistake?

Had drained all the water from the tank and added fresh water without the salt. Not to forget Genesis anti-chlorine which removes chlorine and chloramine as well.

Yes there's too much dissolved organic particles in the water and particles at the bottom of the tank. have might be feeding too much green peas to goldfish.

Added half spoon of sodium carbonate to buffer the KH of the fresh water.

no choice have to use a 2ft tank instead of a tub cos of space constraint.

still learning how to brew green water in a 2ft tank.

so far so good. few more things

1. fish size (body length, and type)
2. fish load (number of fish)
3. food (how frequent, what type)
4. photo period (how long)

what else u add that you did not mention ?

[sheringam]

so far so good. few more things

1. fish size (body length, and type)
2. fish load (number of fish)
3. food (how frequent, what type)
4. photo period (how long)

what else u add that you did not mention ?

Just started everything this morning and hope to see results

1. 4.5" ranchu
2. 1 fish cos tank only around 13 gal
3. feed with hikari lionhead pellets twice per day (morning and day)
4. 12 hours per day with 2 x 36W OSRAM 6000K PL lights

[The Matrix]

it's a big fish for a small tank. the rest looks okay. just keep on trying.

[CyberET]

Just started everything this morning and hope to see results 

1. 4.5" ranchu
2. 1 fish cos tank only around 13 gal
3. feed with hikari lionhead pellets twice per day (morning and day)
4. 12 hours per day with 2 x 36W OSRAM 6000K PL lights

har? i thought u say 2ft? 2ft tank around 59Litres le..
12 litres is only a 1ft tank
i rather u do daily water change than try green water...
and its 4.5" not 2"

[sheringam]

har? i thought u say 2ft? 2ft tank around 59Litres le..
12 litres is only a 1ft tank
i rather u do daily water change than try green water...
and its 4.5" not 2"

yes it's 2ft tank around 13 gal filled with water and not 1ft. 1ft would be too small already.

[CyberET]

oh, hehe.. pai sei, my mistake, i mistook gallon as litres

so u've restarted again today?