plant melt everytime dosing fert

[plant talk]

Hi,

My plant melted every time i dose fert, even taiwen moss melt.When tis happen I will change 100% of the water and after 2week, the plant will become normal.

But not dosing fert, my plant look thin n unhealthy.

Pls help.Thanks.

[bclee]

I think it will help very much if you provide mroe information like what fertilisers? what plants? what lighting you have... etc.

BC

[plant talk]

Hi,

My plant tank spec:
Dimension:5x2x2
Filter:external overflow system
Lighting: 364watts
PH:6.6
KH:4
Base fert:6bag JBL (8mth)
temp:27degree

When I start to dosing K2SO4,MgSO4*7H2O..and other fert, the plant start to melt.when i stop it return to normal.

The plant is now look thin n very unhealthy.

[Plantbrain]

Add dechlorinator, do 50% water change weekly with similar temp water.

Dose:

1.5 teaspoon KNO3 3x a week
1/8 teaspoon KH2PO4 3x a week
Traces added on off macro dosing days - 30mls 3 x week

Adjust KH to 4 and GH to 5 or so.
Keep pH at 6.6 while the lights are on, check am/pm times.

Do that, you should not have an issue.

Regards,
Tom Barr

[vinz]

PlantTalk clicked wrongly and posted a new thread instead of replying:
[quote:074f304db5="plant talk"]Hi,

I does the similar dosing every 3 days and the plant still melt.Yeah,another thing, I use an external overflow system which cos loss of co2.But i keep the ph at 6.6, the co2 level shd be ok rite.Could the overflow system cos other problem?Does dosing benificial bactical help?[/quote:074f304db5]

[vinz]

Please tell us what plants you have.

Don't do 100% water change. You will most likely end up causing the filter bacteria to die off and have to re-start the nitrogen cycle.

Another thing, after the plants melt, are there anything left of the plants? Did they die completely and you got new plants or you left the live portions to re-grow in the 100% new water? The melt might be the plants attempt at adapting to the new water conditions (i.e. the fertilisation). By doing a complete water reset, you could be resetting the plants too.

Your susbtrate is 8 months old? What about the whole tank, plants, filter, lights, etc? Are they as old or did you just start a new tank with the old substrate? Give us some history about the tank.

In you want us to help, you have to help us understand your problem first.

Yes, if your pH is at 6.6 and KH at 4, you're ok on CO2. Assuming your test kits/equipment are working properly.

[PeterGwee]

Check the AM/PM pH readings like what Tom mention in his post. If your external sump is wasting a lot of CO2 and you do CO2 only during the photoperiod, you might find that your CO2 cocentration would be very low in the morning or even extend to half of the photoperiod depending on the efficiency of your CO2 reactor. CO2 and NO3 are the main troublemakers whenever you have issues with plants.

Regards
Peter Gwee

[plant talk]

Hi gd day to all,

My tank is 3yr old.most of my plant is mid light plant.Like tiger lotus.I oso have taiwan moss.Now the moss got stunt growth and look burned.
Can you guys kindly tell me wat No3 can cos to the plant if not well manage.

[vinz]

PlantTalk,

If you only give little details like that, we can only guess at the problem and give you general answers.

What and how much are you dosing? Lighting period, what plants? History of your problems (i.e. what happened when you did what. What else did you do?) E.g. Now your moss is stunted... but what are you doing now? Dosing or not dosing? Dosing what? Without knowing details we can't give you any specific advice which you seem to be seeking.

Tell us as much as possible... else no one can really help you.

[plant talk]

Hi to all,

Pls let me go n find out the name of the plant.brb real soon..thanks.

[Plantbrain]

There are a couple of possible things that would cause your plants to melt:

No NO3 left since you removed it all with a water change. This will cause a number of plants that are N limited to melt.

If you have not been adding any supplemental N, that';s most likely it, or not adding Dechlorinator.

One of the two.

Fertilize while you are filling the tank after a water change, stay at 70-50% range.

That should do it.

Regards,
Tom Barr

[plant talk]

Hi guys,

The plants that I have are Aponogeton ulvaceus, Echinodorus bleheri, taiwen moss,hair grass and red lotus(bownish-red).

The tank have been set up for 3years.The lighting set start from 144watt and I upgrade to 364watts and I on the lighting sets for 10hr/day.

The plants survive except Aponogeton ulvaceus melt.Overall they look thin and unhealthy as I only used base fert so I bought in some fert for dosing.

1.5 teaspoon KNO3 1x a week
1/10 teaspoon KH2PO4 1x a week
2 teaspoon K2SO4 1x a week
Traces added - 30mls 1x a week

Soon after dosing the fert, all the plants show sign of melting and I stop dosing it.

I change 30percent of the water weekly but it did not help so last week I did a 100% change.

This is wat had happened.Pls kindly advised.Thanks.

[Plantbrain]

Unless you are adding poison or something to your tank on the side or swomething else you have not mentioned, if you follow the advice I suggest, you will not have any melting.

If you are, you are doing something else wrong that you have not told us about.

I grow these plants as do most of us, we do not have them melt unless something is very wrong.
It's not the NO3/PO4 dosing etc that's causing them to melt.

You are not the seeing cause and effect here. By doing the large water change and then adding the NO3, etc, the water change is the issue/dechloro.

Few things make plants melt.
Aponogeton ulvaceus can be a senstive plant.
It should bounce back though.

You need like 2-x3 the amount of ferts.
Also make sure the CO2 is 20-30ppm

You do that, then 30-50% weekly change should make the tank work.